Metal Boxes and Enclosures

Metal enclosures for electronics are available in a variety of durable materials. Material options include diecast aluminum enclosures, extruded aluminum enclosures, carbon steel enclosures, or stainless steel enclosures. Sturdy and rugged, metal enclosures provide a degree of inherent EMI shielding and protection for your electronic device. Metal project box options are available for both indoor and outdoor environments and are suitable for almost any industry. We have options if you're looking for a hinged metal box, waterproof metal box, or even a metal electrical box. With a variety of sizes, styles, and finishes available, it's easy to find the perfect metal enclosure box for any project.

With so many different types of metal enclosures available, what are the key features to look for? Read below to understand what is important when choosing a metal enclosure.

Features to Look for in Metal Electrical Enclosures

These factors will help you determine which type of metal enclosure is best suited for your application:

  • Materials: Each of the different metal enclosure materials has its own desirable properties. Whether it’s the heavy duty corrosion resistance of stainless steel or the exceptional RFI/EMI protection of aluminum, consider the specific pros and cons of each material before making your selection. Read our enclosure materials guide for additional important information on choosing the right material.
  • NEMA/IP Rating: Metal boxes used in demanding applications, such as outdoor junction boxes or industrial control panels, often need NEMA and/or IP rated protection. See our guide to NEMA ratings and guide to IP ratings for more information on these key rating systems, or explore specific NEMA-rated and IP-rated enclosures.
  • Mounting Hardware: Your application may require a metal electronics enclosure that includes mounting hardware. This can be internal hardware for mounting electronic components inside the enclosure, such as PCB mounting bosses, or external mounting hardware such as wall mount flanges for attaching the enclosure to a surface.
  • Off-the-Shelf vs. Custom Fabricated: It’s common for sheet metal enclosures to be custom fabricated, but off-the-shelf enclosures may present a faster and more convenient solution for your application. Polycase offers off-the-shelf enclosures in a huge variety of sizes, with numerous configuration and functionality choices available to match your needs.
  • Customization: Use Polycase in-house CNC machining and digital printing services to add custom cutouts, images and graphics on select metal enclosure models. We offer fast lead times, responsive customer support and powerful options. See our customization options to learn more and get an instant quote!

Shop our full selection of metal enclosures below. Looking for particular specs and features? Use the sorting tools on the sidebar to find the perfect enclosures for your application.

Digital printing on extruded aluminum

Take your enclosure from plain to powerful

Pricing in 90 seconds

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CNC Machining

Receive your enclosures with the required machining, saving you time and money. Guaranteed accuracy, no scrap, 1-3 week lead times.
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Digital Printing

Enhance your product, impress your customers with high-quality graphics printed directly on the enclosure.
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