10 Best Metal Enclosure Manufacturer of 2022

Are you trying to find a reputable manufacturer of metal enclosures? You’re covered by us! We gathered leading metal enclosure manufacturers who produce both standard and custom-designed metal enclosures using various processes and alloys, including diecast enclosures made of aluminum, zinc, or magnesium, sheet metal enclosures made of steel or aluminum, and profile enclosures made of extruded aluminum profiles. Please keep reading!
Best Electrical Enclosure Manufacturers of 2022

Metal Enclosure Market Overview

The previous assessment period, 2013–2021, saw a CAGR of 4.5% for the worldwide electrical enclosure market. Between 2022 and 2028, the demand for electrical enclosures is anticipated to increase by 1.4 times. Electrical enclosures are cabinets for mounting electrical displays, knobs, and switches on electronic and electrical equipment while also guarding against the electrocution of equipment users. They have locks installed to protect the electrical circuits from outside influences like rain, dust, moisture, and other things.

10 Best Metal Enclosure Manufacturers in the World of 2022

Here are top Metal Enclosure Manufacturers that can be relied on:

Mika Metal Enclosures

Custom manufacturer of the enclosure consisted of aluminum, stainless steel, and mild steel. Laser cutting, punching, shaping, drilling, tapping, and welding are just a few of the capabilities. There are also further services offered, including powder coating, screen printing, grinding, polishing, and deburring. Production runs in low to high volumes and prototypes are both available. This material is appropriate for bases, brackets, chassis, mounts, plates, louvered panels, and wraps. serves the telecommunications, energy, electronics, automotive, medical, and aerospace industries.

Homepage: https://www.mikafab.com/
About: https://www.mikafab.com/about/
Products: https://www.mikafab.com/industries-served/
Enclosures: https://www.mikafab.com/wp-content/uploads/Mika-Makes-Electronics-Flyer.pdf

Product Features
Company NameFound YearCountryCEO
Mika Metal Fabricating1939OhioScott Shelfer

Regal Research & MFG. Co Metal Enclosures

Custom manufacturer of equipment enclosures in metals made of steel, aluminum, and stainless steel. provides capabilities for welding, CNC machining, electrical and mechanical assembly, and precision sheet metal fabrication. serves the OEMs in many technology-based sectors, including semiconductor, aerospace, medical, defense, industrial, and telecommunications. There are services provided for design and engineering, turnkey integration, plating and painting, testing, and VMI.

About: https://regalresearch.com/about/
Products: https://regalresearch.com/complete-product-and-sub-assembly-manufacturing/
Industries: https://regalresearch.com/industries/

Product Features
Company NameFound YearCountryCEO
Regal Research & MFG. Co
1990United StatesGayle Glosser

Metcase Enclosure

Manufacturer of aluminum enclosures for the electronic industry, both conventional and custom. An instrument, desktop, portable, sloping front, rack, and wall mount enclosures are some examples of these types. obtainable in a range of sizes. Drilling, milling, tapping, punching, and folding are among the capabilities. Additionally provided are auxiliary services like digital printing and painting. Suitable for control systems, sound and studio equipment, industrial computers, laboratory instruments, security units, machine controllers, and networking or communications devices.

Homepage: https://www.metcaseusa.com/en
About: https://www.metcaseusa.com/en/about-metcase-usa.html
Enclosures: https://www.metcaseusa.com/en/Enclosures.htm
Metal Enclosures: https://www.metcaseusa.com/en/Enclosures/Metal-Enclosures.htm

Product Features
Company NameFound YearCountryCEO
Metcase1988Shane Dwight Benedikt Goldkamp

STI Metal Enclosures

Manufacturer of metal electrical and electronic enclosures with NEMA ratings. Features include mounting plates, two-turn latches, heavy durable metal structure, and piano-type hinges that differ according to the model. UL Type 4 protection against areas of high temperature or other requirements. used in all wire applications, such as power supply cabinets, junctions, and splices.

Homepage: https://www.sti-usa.com/
About: https://www.sti-usa.com/about-sti/certifications-affiliations/
Products: https://www.sti-usa.com/pcategories/metal_cabinets_enclosures_and_covers/
Enclosures: https://www.sti-usa.com/pcategories/enclosures_covers/

Product Features
Company NameFound YearCountryCEO
Safety Technology International, Inc. (STI)1994Waterford, MichiganJohn Taylor

Bisco Industries Metal Enclosures

Metal enclosures distributor Active wall mount, Ethernet, in-ceiling, raised floor, wireless access point, seismic, and server enclosures are a few examples of the various types. offered are several models.

About: https://www.biscoind.com/about
Services: https://www.biscoind.com/services

Product Features
Company NameFound YearCountryCEO
 Bisco Industries2010Chicago, IllinoisGlen Ceiley

Mier Metal Enclosures

Manufacturer of metal and non-metal polycarbonate electrical enclosures, both standard and customized. available in a range of sizes. Keyholes, bolt-down and removable doors, electrical knockouts, hinged models, tamper switches, tubular key locks, inside water channels, and gaskets are just a few of the characteristics. Detachable interiors, thick gauges, and back panels are included as options. Fit for the installation of electrical, Wi-Fi, and security devices. Additional options include custom painting and powder coating, enclosure fabrication, and graphic and silk screening.

Homepage: https://mierproducts.com/
Products: https://mierproducts.com/wp-content/uploads/Mier-Products-2021-Q2-full-line-catalog.pdf
Custom Metal Enclosures: https://mierproducts.com/index.php/custom-metal-enclosures-and-non-metallic-enclosures/

Product Features
Company NameFound YearCountryCEO
Mier Products, Inc
United States
C. Scott Hullinger

Tri-State Fabricators Metal Enclosures

Producing enclosures out of stainless steel and aluminum on demand. A few examples of available capabilities are punching, shearing, laser or saw cutting, milling, drilling, reaming, boring, honing, turning, threading, tapping, rolling, shaping, welding, stamping, and assembly. The following production volumes are available: prototype, low to high, and short to long run. There are services available for urgent situations. provides services to the automotive, construction, defense, energy, HVAC, maritime, medical, transportation, chemical, pharmaceutical, food, and beverage industries.

About: https://tristatefabricators.com/about-us/
CNC Machining: https://tristatefabricators.com/cnc-machining/

Product Features
Company NameFound YearCountryCEO
Tri-State Fabricators, Inc.1983Madisonville, OhioRick, Jeff

Hudson Metal Enclosures

Manufacturer of industrial metal enclosures for precision systems or equipment, both conventional and custom. Some enclosures are spherical, rectangular, and square, for relays and deep-drawn batteries. The materials utilized include cold-rolled and stainless steel, titanium, Monel®, Hastelloy®, Kovar®, Inconel®, HY-MU 80, nickel silver, aluminum, brass, copper, and nickel. available in a variety of sizes. Project management, Six Sigma, and lean manufacturing, as well as high-volume or prototype productions, are among the capabilities. The following sectors are provided with services: aerospace, aviation, automotive, electrical, irrigation, and semiconductor.

About: https://www.hudson-technologies.com/about-us/
Metal Enclosures: https://www.hudson-technologies.com/applications/metal-enclosures-cases-covers/

Product Features
Company NameFound YearCountryCEO
Hudson Technologies1991 Volusia CountyBrian Coleman

Special Products & Mfg., Inc.

Maker of metal enclosures by custom. Among the types are 1, 3R, 4, 4X, 12, 12K, and 13. Available for protection from a range of environmental factors, such as protection from falling dirt, rain, sleet, snow, ice, wind-blown dust, splashing water, hose-directed water, corrosion, circulating dust, lint, fibers, and flying debris, as well as protection from drippings and splashings of non-corrosive coolants or oil, knockouts, and more. The three main types of mounting are pole, floor, and wall mountings. Size, doors, hinge types, latching/handling, viewing glass, powder coating finish, and other modifications are among the further possibilities.

About: https://spmfg.com/about-spm/
Enclosures: https://spmfg.com/nema-enclosures/

Product Features
Company NameFound YearCountryCEO
Special Products & Mfg., Inc.1963TexasRob Grand-Lienard

PGF Technology Group, Inc. Metal Enclosures

Manufacturer of custom metal enclosures for the transportation, aircraft, automotive, electronics, medical, and optical sectors. offered in single- and double-door, floor-mounted, flush, surface- and wall-mounted, and slanted top mount variations. Additionally offered are services like fabrication, powder coating, product development, and PLC programming. Runs of prototypes and low- to high-volume production

About: https://www.pgftech.com/about-us/why-pgf/
Industries: https://www.pgftech.com/industries-served/

Product Features
Company NameFound YearCountryCEO
Hoffman Enclosures, Inc.1945New Hampshire, United States.Beth Wozniak

What is a metal enclosure?

Metal enclosures are manufactured shapes such as boxes and containers that are used to house, store, or otherwise enclose goods. Metal enclosures include numerous electrical cabinets, stainless steel enclosures, and aluminum enclosures. Metal enclosures can be fairly straightforward when compared to other fabricated metal goods. However, metal enclosures are one of the most significant and popular types of metal enclosures.

Types of Metal Enclosures

For exterior applications, metal enclosures are appropriate for everything from junction boxes to control panels. Some strong materials, including aluminum, steel, and stainless steel, are available for enclosures.

Aluminum Enclosures

For many enclosure applications, aluminum is a fantastic solution. It is one of the least conductive metals and incredibly resilient. Additionally, aluminum is a suitable material choice for projects exposed to dampness because it is naturally corrosion-resistant. Extruded aluminum enclosures and diecast aluminum enclosures are both available from Polycase for outdoor application.

Stainless Steel Enclosures

Stainless steel enclosures are one of our most dependable material choices for metal boxes and the best alternative if you need both endurance and aesthetics for your project. These enclosures, which are made of 304 stainless steel and meet NEMA 4X and IP66 specifications, are watertight and corrosion-resistant.

Carbon Steel Enclosures

Carbon steel enclosures are a more affordable option than stainless steel. These enclosures have a watertight gasket in the hinged cover that offers NEMA 4X protection for your equipment inside and are made of sturdy 16-gauge powder-coated carbon steel.

Industrial Metal Box Enclosures

In addition to the general “enclosure,” cabinets, and panels, to name a few, the phrase “fabricated metal box” is frequently used interchangeably to refer to additional, comparable products. They are a widely used class of enclosure that is especially useful for electrical utility items. They can be produced in a variety of sizes utilizing stainless steel and aluminum. Box enclosures can be made in a wide variety of styles, including simple galvanized steel boxes, hinged boxes, pull boxes, toolboxes, powder-coated boxes, screw cover boxes, and latch boxes.

Fabricated Metal Cages & Chassis

Card cages, sub-rack card cages, and chassis are some of the most popular styles of constructed metal cages. These are the kinds of electrical enclosures that are frequently seen in computer data centers and are employed to contain a variety of associated equipment, such as computer servers, printed circuit board cards, and fan assemblies. They are also known as server cabinets, equipment racks, and rack units.

Fabricated Metal Panels

The word “metal panels” can be used to describe a variety of wholly different goods, which might be misleading. For instance, ornate architectural metal panels are frequently employed to achieve aesthetic goals while constructing the façade of substantial commercial structures. However, smaller enclosures like electrical panels might sometimes be referred to as “metal panels.” Every home has one of these, which holds all the various electrical circuits and is frequently in the garage. It’s also known as a fuse box.

Industrial Metal Bins

They can be used to carry things when equipped with wheels, store bulk products and materials, confine and dispose of waste, and even secure very huge and expensive machinery, such as that used on construction sites, when industrial-grade locks are installed. There are, however, smaller sizes of metal bins that can be used in place of metal containers, usually for indoor use. These are frequently stackable to maximize space and are utilized in commercial and industrial settings, particularly warehouses.

Industrial Metal Cabinets

In essence, metal cabinets are just metal boxes with doors. They frequently have interior racks, shelves, drawers, or even a mix of the three. When wheels are added, they are occasionally referred to as “metal carts,” like the ones used in hospitals to move medication or surgical supplies. Metal cabinets may include locking mechanisms on the doors if they are made to protect expensive or precious contents. They are frequently utilized as lockers, bookcases, or filing cabinets, similar to those in gyms and schools.

Metal Enclosure: Working Principle

Metal cases and enclosures either keep things within a system or keep them outside.
Here are more metal enclosure functions:

– Serving as a shock absorber for movement or vibration
– Storing caustic or dangerous substances or liquids inside the enclosed area in the event of failure
– Preventing the system from being contaminated by external agents like dust or dirt
– Defending internal parts from external liquids, chemicals, UV radiation, or environmental elements while being used

Metal Enclosure Manufacturing Processes

Metal enclosures are manufactured using procedures that can be tailored to the applications for which they are used. To create tough, perfectly formed enclosures, manufacturers use a variety of metal fabrication techniques.

Metal Stamping

This kind of component frequently uses metal stamping methods. These procedures mold flat sheet metal into straightforward or intricate shapes.

Deep drawn stamping

Deep drawn stamping is particularly helpful for enclosures that need to be taller than they are wide, like those that shield cylindrical tanks. Deep-drawn stamping produces precise enclosures that are smooth and robust in various applications. This method of production is also excellent for minimizing the number of connected edges or material seams on a part, which lowers the risk of component failure or eliminates the requirement for material reinforcing at weaker seams.

Progressive die stamping

For enclosures with increasingly complex configurations, progressive die stamping—which enables continuous manufacturing with dramatic shaping—is helpful. To decrease material fatigue and boost the strength of the finished component, a material can be modified incrementally using the progressive die technique.

Finishing processes

Additionally useful and well-liked for the production of these components are finishing procedures. Metal enclosures frequently require additional processing to harden and stiffen the case, regardless of the material or manufacturing method. Metal enclosures can be better prepared for the worst environments, such as corrosive or extreme temperature conditions, by finishing techniques like annealing, hardening, or other heat treatment.

Industrial Applications of Metal Enclosures

Metal enclosures are important in practically every business that uses delicate or pricey equipment, whether it be batteries, electrical systems, or drilling equipment. The proper metal enclosure shields these systems from fluids, pollutants, and dirt, maintaining their functionality and reducing downtime. Industrial enclosures do the same thing by preventing dust accumulation, which can eventually lower product quality and interfere with proper machine operation. The best method to reduce these threats and maintain system performance is with safe, properly-fitted metal enclosures.

Industries that frequently use customized enclosures to safeguard their electronics include:


– Food and beverage
– Solar battery storage
– Pharmaceutical processing
– Automotive manufacturing
– Electronics
– Industrial machinery
– Medical
– Printing

Key Benefits of Metal Enclosures

Comparing metal enclosures to plastic or glass casings, many significant benefits can be seen. High-temperature resistance, resistance to corrosion, and resistance to harsh lighting conditions are a few of them. Additionally, metal enclosures have greater strength and vibration, and shock resistance because of the combination of seamless stamping methods and annealing treatments. Taking advantage of all these advantages, metal enclosures can handle even the most demanding uses, such as emergency and military applications for both indoor and outdoor spaces.

Materials used in Metal Enclosures

The following stage is to choose the metal after you have an understanding of the product requirements. Your choice of metal will primarily depend on how your sheet metal enclosure will be used. You don’t want to choose a metal that will quickly degrade under particular working conditions. The best metals offer high quality while giving resistance to wear and corrosion. Let’s quickly review the qualities of the metals that work well for enclosure designs.


This metal is corrosion-resistant and lightweight. In some circumstances, it is much less rigid than steel. There are various types and grades of aluminum. There are, however, primarily two types of aluminum alloys used in sheet metal enclosures. They are 5052 and 6061 aluminum, respectively.

5052 aluminum can be bent to incredibly small radii without cracking. This alloy can be easily machined and welded, which makes it appropriate for sheet metal enclosures. Contrarily, 6061 aluminum is much more likely to crack than its other equivalent. It can, however, also be easily machined.

Aluminum works well for sheet metal parts and enclosures because of its lightweight and resistance to corrosion. For long-lasting and protective coatings, aluminum parts may occasionally need to be anodized. Chromate coating might also be the best choice for a part that needs electrical contact.

Stainless Steel

Nickel and chromium are present in this metal. As a result, greater corrosion resistance is guaranteed. Additionally, compared to aluminum, stainless steel has a higher tensile strength. So, sheet metal enclosure designs for high-impact applications can use this material. A stainless steel part with a grainy finish will catch your eye.


This material is annealed zinc-coated low-carbon steel. The goal of the annealing process is to ensure that the zinc will attach to the substrate through diffusion. As a result, you may be certain that no flaking off will occur when shaping or bending. Galvanneal is the best choice if you plan to use the metal enclosure in moist environments. Additionally, depending on its coating, it is corrosion-resistant.
Steel that has been rolled and tightly annealed is a great material for indoor enclosures and parts. Additionally, it provides the ideal balance of stiffness and strength. Its greatest long-term resilience is found inside. CRCA has natural corrosion resistance, therefore if you leave it unprotected, it might rust.


Copper is a superb metal, despite being utilized in sheet metal enclosure designs very infrequently. Excellent thermal and electrical conductivity are provided. It is hence appropriate for electrical applications. But because copper is so brittle, few manufacturers utilize it for enclosures. In the best circumstances, they are perfect for bus bars or other small pieces.

If you don’t have the greatest metal criterion, our sheet metal enclosure design advice for metal selection will be lacking. The following characteristics should be taken into account when selecting a metal for your design.

– Tensile power
– Machinability and weldability
– Corrosion protection
– resistance to wear
– restrictions on weight for electronics enclosures
– assembly method
– conductivity in both heat and electricity
– Cost

Different Shapes of Metal Enclosure

The following shapes can be used to create metal enclosures that are practical, economical, and visually beautiful such as:

Folded Box Shape

It features a traditional four-sided box shape with a cover that is included. With this enclosure form, there are more mounting possibilities and simple service access.


Making the shape of the enclosure is simple. PCBs with connectors on opposing sides work well in F-shaped enclosures.


Another simple enclosure is the L-shape. The geometry is simple to comprehend and is equally simple to use.


U-shape enclosures are just as simple to manufacture as F-shape enclosures. They frequently have sturdy foundations and provide simple service access

Manufacturing Methods for Metal Enclosures

Sheet metal

In addition to being strong, adaptable, and long-lasting, sheet metal may be used to create parts straight from CAD models. Since sheet metal does not require the removal of the majority of the beginning material, its material cost is typically much lower than CNC milling. Cutting, bending, fastening, and occasionally welding or riveting are among the many stages that go into it. Though setup expenses at first may be significant, as volume rises, the cost per item falls rapidly.

CNC machining

When making parts with excellent precision, CNC machining enables the production of complex structures that would otherwise require a lot of tooling and several phases if built from sheet metal.

CNC machining is only used when necessary because it is typically more expensive than sheet metal. Sheet metal is better appropriate for the majority of uses.

3D printing

Metals and plastics can both be utilized in additive manufacturing, often known as 3D printing. When used with metal, it can substitute a single component for multi-part assemblies that need extra procedures like brazing and welding. It can also remove excess material from well-designed parts and enable the creation of geometries, such as those with intricate interior channels, that are not feasible using alternative techniques.


In seven days or fewer, Direct Metal Laser Sintering produces completely functional metal prototypes and production parts. It can be utilized with stainless steel and aluminum for enclosures and with copper, titanium, cobalt chrome, and Inconel for other purposes. Because of its capacity to create very intricate geometries like honeycombs, mesh-like structures, or hollowed-out features, it can create lightweight components.


In as little as one day, selective laser sintering (SLS) may create precise prototypes and usable production parts. There are numerous polymers with a nylon foundation that produce highly durable final products.


Multi Jet Fusion (MJF) selectively applies to fuse and detailing chemicals across a bed of nylon powder, which is subsequently fused by heating elements into a solid layer. MJF uses an inkjet array to do this. Until the section is finished, the process is repeated, with powder being applied to the top of the bed after each layer.


Stereolithography (SLA) is used to create concept models, cosmetic prototypes, and complex parts with intricate geometries in as fast as one day. SLA enables the use of a large variety of polymers, incredibly high feature resolutions, and high-quality surface finishes.

Carbon DLS

Carbon DLS (digital light synthesis) produces useful, end-use products with smooth surface finishes and mechanically isotropic characteristics. For high impact-resistance components, it can be used with both stiff and flexible polyurethane materials.


In as little as one day, PolyJet can create multi-material prototypes with flexible features and complicated pieces with intricate geometry. There is a variety of hardnesses (durometers) that are suitable for parts with elastomeric properties, such as gaskets, seals, and housings.

Things to Consider in Choosing the Right Metal Enclosure

Metal enclosures are versatile and offer many advantages for electronics, including enhanced conductivity, reduced emissions, and defense against severe conditions. When beginning such a project, there are numerous factors to keep in mind. Your job will be easier and you’ll get better results if you understand these. Here are some sheet metal enclosure design pointers to assist you to produce high-quality work. Read on!

Recognize the needs of your product

It is crucial to base your design approach on the demands of your end product’s functionality and attractiveness. It will be easier to create the ideal enclosure design to satisfy those objectives if you are aware of the requirements that your product must meet.

Think about your metal choice

The next step is to choose the appropriate metal to construct your enclosure with after you are aware of the specifications it must adhere to. Your decision will primarily be influenced by the following characteristics:

– Tensile Strength – Depending on the use, a metal with a high tensile strength may be required to prevent snapping or breaking (for example steel).

– Weldability – How easily can the metal be welded? How much welding preparation is necessary? You might have to choose a particularly weldable metal, such as pure steel, based on your budget.
– Corrosion resistance – Depending on the intended use, you could want a metal that can consistently survive high levels of corrosion. Your metal should generally be able to survive chemical reactions and oxidation.

The best metal for your design will also depend on various hot and cold sheet metal forming processes.

Consider metal thickness

The weight, strength, punch size, and flange length of your enclosure will all be impacted by the thickness of your sheet metal. Choose a thin sheet of metal if you need your enclosure to be compact and lightweight; otherwise, you’ll have trouble getting those qualities. A thicker sheet of metal will ensure that your enclosure has the extra strength your design requires if it must be strong and durable.

Keep in mind that single-sheet sheet metal enclosures are frequently constructed, therefore you must maintain consistent wall thickness.

Choose your metal enclosure shape

Along with thickness, another factor to think about during the design stage is the shape of the enclosure. You must consider your product straight down to the PCB and system design level to choose the best shape.

While there are a few common shapes available, they are minimal in comparison to plastic enclosure molding.

Be consistent when bending

Maintaining a constant bend radius is crucial throughout your design. Additionally, the radius and sheet metal thickness should match. Otherwise, your enclosure is more likely to have circulation issues and is more likely to fracture.

Remember that the minimum flange length for each bend should be around three or four times the thickness of your sheet metal when calculating the appropriate bend radius for your design. Include your material of choice as well. Different metals have different levels of bending resistance.

Choose appropriate metalworking tools

You need a wide range of tools when it comes to sheet metal fabrication to make a metal enclosure. However, the sheet metal material you’ve chosen for your design will determine which tools you’ll need. For instance, different punching tools and methods must be used for steel sheet metal than for aluminum.

As a result, always make sure you have the right equipment for the job. Keep in mind that each production method you intend to use will necessitate the use of specialized tools.

Utilize appropriate finishing techniques

You can pick from a variety of sheet metal finishing options. Your design depends on the technique you use because each one has its special advantages.

One illustration is powder coating, which is applied to metals like steel. To do this, the dry thermoplastic powder must be applied and electrostatically adhered to the surface of the sheet metal. This method produces a long-lasting finish at a reasonable price. Additionally, it can be used to add different textures and colors. However, powder coating will give your enclosure a little more thickness.

Keep the design of your enclosure simple

Finally, try to keep your design as straightforward as you can. A challenging design will necessitate numerous manufacturing phases and prototypes to generate your finished product.

Simpler designs enable more efficient production, which benefits both your design team and your manufacturing partner in terms of cost and time savings.

However, you can always use custom tooling if your application does call for a more intricate enclosure design. This will aid in creating a unique design, but it will cost more money. Make sure to discuss your design with your manufacturer to find out whether they can offer such quick-turn solutions.


Enclosures made of sheet metal are crucial metal products for numerous purposes. Use our top sheet metal enclosure design tips if you’re going on such a project to finish it successfully. Having a skilled sheet metal maker on your side, like DOHO, is undoubtedly the best thing, though. We can assist you at every stage of the design and fabrication process with the support of our qualified experts. Our team will be prepared to take on your job if you get in touch with us right away!

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