Plastic Electronic Enclosure Solutions

Electronic enclosures keep your components protected in any environment. Polycase offers an array of electronics boxes and multi-purpose metal and plastic electronic enclosures. Superior materials include high-quality plastic, aluminum, and steel varieties, with indoor and outdoor electronics enclosure options available. From robust NEMA rated enclosures to basic potting boxes, find your perfect fit at Polycase.

Outdoor NEMA rated electrical enclosures with knockouts

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Plastic enclosures and metal boxes for electronics - enclosure sizes

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Stainless steel electrical boxes

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Why Polycase?

Buying direct from the manufacturer saves you time and money. Choose from thousands of metal and plastic electronics enclosure combinations to meet your exact needs. Our knowledge, experience, quality and speed is unmatched, resulting in a convenient and stress free partnership.

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    Same Day Shipping


    Single Source Supplier


    Engineering Support

Customization Services

Customize Your Polycase Enclosure

Save time and impress your customers with a one-of-a-kind design that fits your needs.

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Electronic Enclosures and Boxes from Polycase

Polycase is a premier manufacturer of off-the-shelf plastic electronics enclosures and electrical boxes for OEM's in a variety of industries. Our enclosures are made from high-quality materials including: plastic, aluminum, steel and stainless steel. Designed for a variety of applications and environments, our catalog of electronics enclosure solutions range from waterproof NEMA-rated electrical enclosures to basic indoor potting boxes. Customer service is our top priority and speed is our promise. Stock orders placed before 3pm EST M-F ship same day. Customized orders with CNC machining and digital printing ship within 1-3 weeks. We continue to innovate and expand our product line of plastic enclosures and industrial metal boxes as well as our value-add services to ensure they meet the needs of electronic engineers and designers. We offer over 2,300 variations of off-the-shelf metal and plastic enclosures to ensure you can find your perfect fit. Our knowledgeable customer service representatives are available to answer questions, and our engineering team can answer any highly-technical questions. Reliable and fast, working with us is easy. Polycase has served the electronics industry since 1951, so we can be your trusted partner today and into the future.

Real Customers, Real Reviews

I cannot thank the Polycase team enough for the exceptional level of service you all provide. Everyone that I have had the pleasure of working with has provided exceptional service and response. It is something we have always known about and counted on with your company, but sometimes it just needs to be said. You are running an exceptional company, and thank you again for all you do for us.

Richard H.

I just wanted to take a minute to say thank you for the great service and early delivery of our recent order. We received the machined and printed parts today and were extremely happy with the fit and look. Your folks went above and beyond by milling the inside of the rear panel to insure a connector would work properly. This has been the easiest and most pleasant custom job we’ve done in the dozen or so years we’ve used Polycase. Thank you for your advice and for putting me at ease with this super time sensitive project.

Ron M.

Just a quick note to let you know that this is the BEST website I have ever experienced. Very intuitive and professional. I love it! In a space that might appear to be a commodity, you guys have done a fantastic job of differentiation! I can tell you guys put a lot of thought into the quote “process” which doesn’t happen often. I can't imagine going anywhere else. Great job!

Mark B.

I ordered enclosures through Polycase and they were extremely helpful and responsive to help me meet a critical timeline. I look forward to using them again.

Joe A.

Polycase is great to do business with. You are easy to communicate with, you get our product here on time and as ordered! That is not common today.

Bryan Y.

Polycase has an excellent product offering. Additionally, the website it is easy to navigate and find what I need.

Rudolf P.

Thank you for your prompt responses and great solutions; business would be so very dull without good customer service.

Jorge M.

I called Polycase and was very impressed with the service I received. The rep walked me through the site, showed me how to pick by size etc., she was really patient and a overall a pleasure to speak with.

Jim C.

I like working with Polycase. You've been delivering a good product in a predictable manner. I've spoken to others, and it sounds like they've had the same experience.

Peter E.

Polycase is a great place to do business and we understand that depends on the people.

Bryan Y.

The "search by size" feature, CAD models and drawings were very helpful for selecting the right sized enclosures - these were distinguishing features that convinced me to buy from Polycase. I used the enclosures on two projects, the case walls were thick and sturdy, and they worked great. Thank you!

Matt V.

I love dealing with Polycase! You guys have an awesome company.

Michael R.

I have had many years experience using Polycase enclosures and have always been very happy with your products and service. You guys are the best!

Robert A.

Professional and straightforward! All team members have been very friendly and knowledgeable. They were helpful and quick to resolve any issues that came up. It's truly a pleasure doing business with Polycase!

Trevor S.

We've been using Polycase enclosures for more than 15 years. All these years they've shown flexibility with our special requests, and have provided quality enclosures with virtually zero defect. We not only like the products but also the outstanding quotation/engineering/approval/shipping processes behind. Thanks to for their high quality at fair prices with top customer service.

Michel S.

Polycase has been a great partner to work with. They are responsive to all requests.

Cindy P.

I spent a lot of time combing the internet for the right size enclosure at a decent price. I mean A LOT of time...I am so happy to have found your website. Your selection is fantastic and the ability to have it machined takes it even further. The fact that you provided instant quoting, excellent drawings, 3D models, etc. allowed me (who's completely inexperienced in proper enclosures and membrane design) to wind up with a membrane that fits perfectly with what you delivered.

John H.