CNC MACHINING
Precision modifications tailored to your exact design needs, including cutouts, threaded holes, recesses and more.
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Top Enclosure Categories
Explore our extensive selection of reliable electronic enclosures, available in both plastic and metal options. Whether you need a NEMA-rated enclosure or a basic potting box, Polycase makes it easy to find the right fit for your project.
- Material
- Application
- Ratings
- Enclosure Accessories
Shop By Size Tool
Simplify your search by inputting your dimensions and seeing what enclosures fall within your parameters.
Find Your SizePlastic Electronic Enclosure Series
Browse our leading plastic enclosures series engineered with a variety of features, designs and sizes to choose from making it easy to find the right electronic enclosure for your application.
Enclosure Customization Services
DIGITAL PRINTING
Add a professional touch to your device with full-color digital printing applied directly to the surface of the enclosure.
LASER MARKING
High-contrast graphics that withstand the harshest environments, offering the best in durability and accuracy for your electronic enclosures.
What Makes Polycase Different?
Polycase offers high-quality electronic boxes, with the majority of our plastic electronic enclosures made right here in Ohio. Whether you need a standard stock enclosure or want to take advantage of our in-house customization services, you can count on consistent quality, fast shipping, and a dedicated customer support team ready to help if needed, plus in-stock orders placed before 3pm EST will ship same day!
EXCELLENT PRODUCTS AND SERVICE
We have used polycase for many custom enclosures for well over a decade. The products are of high quality, customization are made to specification, and the service is excellent throughout the entire order and fulfillment process.
ML-34F OUTDOOR APPLICATION
Using the enclosure to house a data logger for an outdoor temp/humidity measurement application. Delivery was very quick. Case was easily modified to add cable gland for sensor. Mounting tabs simplified installation.
POLYCASE CUSTOM LED DIMMER BOX
I've been very happy with this case. We used it to make a custom LED dimmer box with quick connections. It's super strong. I loved the metal bottom plate to attach my dimmer to. Overall - I'll be buying from polycase again.
CAD FILES!
As a product designer, I'm always elated when I can work with a company producing great products and providing CAD files. I had to make a specific PCB to house an Aviation strobe as well as ADS-B for my paramotor. It had to be tight, but have the design files for the Polycase made that project super easy and 100% precise. THANKS AGAIN!
COULDN'T BE HAPPIER
Couldn't be happier with the result! I just downloaded the . dwg files from the product page and added the cutouts to the existing drawings using AutoCad. Then, I exported the cover drawing as a pdf and did the artwork in Photoshop. If that sounds amateur, you'd be right. And that's all I had to do. Polycase clearly know what they are doing.
CONSISTENT ACCURATE RESULTS
After multiple orders over the past 6 months with custom machining and printing required, Polycase has delivered perfect results each time. The website is very easy to use, and when we have had questions, someone is always available by phone to help out.
Speed
Service
Quality
Our Expertise at Your Fingertips
What Is ABS Plastic Benefits, Uses & Why It’s Ideal for Electronic Enclosures
Overview Material Properties: ABS (Acrylonitrile Butadiene Styrene) is a thermoplastic rated for temperatures between -40°F to 140°F. Technical Specs: Features thick-walled construction (approx. 0.375") and dielectric strength exceeding 1,000 volts. Compliance: ABS is FDA-approved for food equipment and processing environments. Signal Integrity: Provides zero interference for Wi-Fi, RFID, and Bluetooth signals. ABS plastic, short for Acrylonitrile Butadiene Styrene, is a...
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What Is a Junction Box Used For? Evaluating Commercial Uses
Overview NEC Compliance: Follow National Electrical Code junction box sizing tables to determine appropriate box volume and box fill based on conductor count. NEMA/IP Ratings: Critical for commercial codes; includes NEMA 1/12 for indoors, NEMA 3R/4X for outdoors, and NEMA 6P for submersion/marine environments. Material Specs: Stainless steel is required for metal-sheathed cable/conduit grounding; Polycarbonate/ABS for non-metallic applications. Flame Resistance...
Read MoreNew Innovations & Updates
Discover the latest in electronic enclosures, customization offerings and more.
NEW: Black NEMA Accessories
We now offer black versions of our waterproof cable glands, threaded hole plugs and vent plugs. These provide a seamless match for black enclosures, reinforcing our commitment to being your one-stop shop for complete enclosure solutions.
VENT PLUGS
Engineered to maintain proper airflow by reducing internal condensation, providing robust IP68/NEMA 4X protection.
CABLE GLANDS
Designed to protect cable entry points while maintaining a watertight seal, ensuring enclosures maintain IP68/NEMA 6P ratings.
HOLE PLUGS
Securely seal unused openings to maintain enclosure integrity with reliable IP68/NEMA 4X protection.
SHOP WATERPROOF ACCESSORIES
NEW: HN Series
Launched early 2026 in 4 total sizes ranging from 5"x 4"x 3" to 11" x 8" x 4", the HN Series is ideal for a wide range of outdoor electronic applications.
MODERN DESIGN CONFIGURATIONS
Molded in gray or black polycarbonate with an optional clear cover and 3 external mounting configurations; molded on flanges, stainless steel feet, or none.
PREMIUM PROTECTION
Rated NEMA 6P / IP68, the newest lineup of electronic enclosures are designed to protect in the most demanding environments.
MORE TO COME
Hoping for more sizes? We've got plans to expand the series even further in 2026. Subscribe to our newsletter or follow us on social media to stay in the loop!
SHOP HN SERIES
HP Series: Available in 12 Sizes
We recently launched four new sizes of the HP series, expanding it to 12 total sizes; ranging from 5" x 4" x 3" to 15" x 11" x 6" while maintaining the same features you've come to know.
OUTDOOR PERFORMANCE
Molded from UV-stable polycarbonate with ratings up to NEMA 4X / IP66, plus a padlock hasp for added security.
CONFIGURATION OPTIONS
Available in black or gray with the option of a clear cover, plus choose from 3 external mounting options; plastic feet, stainless steel feet, or no feet.
ELIGIBLE FOR CUSTOMIZATION
Modify your HP Series enclosure with CNC machining or graphics, simply go to an HP product and click "Customize it" from the product page.
SHOP HP SERIES
Laser Marking
A new customization service designed to provide functional graphics to electronic enclosures.
WHAT IS LASER MARKING?
A method that alters the material's surface to create crisp contrast graphics or selectively remove surface coatings.
BEST IN DURABILITY & PRECISION
Markings are virtually impossible to remove, plus advanced image processing enables precise alignment around cutouts and features.
HOW TO QUOTE
Simply reach out to us via email with your project's details and be sure to let us know you're wanting to utilize laser marking.
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Universal Pole Mounting Kits
Designed for both indoor and outdoor pole mounting applications.
SIZING
The kit is available in four mounting channel lengths: 6", 8", 12", and 16".
HARDWARE
Each kit includes: 2 mounting channel pieces, 2 adjustable stainless steel bands, and assembly hardware.
+ CUSTOM FIT POLE MOUNT KITS
Shopping Polycase enclosures? We also offer pole mount kits designed to be compatible with select enclosures.
SHOP POLE MOUNT KITS