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UL Listed Enclosures

UL and cUL Listed enclosures from Polycase provide UL-rated solutions for commercial and industrial applications. Our UL type enclosures meet a variety of NEMA and IP ratings. From UL type electrical boxes to UL junction boxes, Polycase's UL Listed enclosures also offer a wide range of sizes, material and styles to choose from.

Options include hinged enclosures, knockout boxes, stainless steel enclosures, pole mount enclosures and more! Learn more below, including how to verify that an enclosure is UL Listed.

What Are UL Listed Enclosures?

UL (formerly known as Underwriters Laboratories) is among the world’s most respected safety standards organizations. It tests and verifies products according to a huge range of standards, including NEMA and IP enclosure ratings.

A UL Listed enclosure is one that UL has verified as being in compliance with the relevant standards, either through its own in-house testing or through outside testing that meets UL requirements. These tests include exposure to hose-directed water, submersion, windblown dust and other hazards, depending on the intended rating of the enclosure.

Why Is UL Listing Important for Enclosures?

Across nearly every industry, UL is the most trusted authority in safety testing. A UL Listed enclosure is a must when you need to know the exact degree of protection that your enclosure provides, with reliable data to back it up. You’ll never have to wonder, for example, whether your NEMA 4X enclosures will withstand rain, sleet, corrosion, dust and other key hazards because they’ve been thoroughly tested by industry experts.

What’s more, numerous industry standards (such as building and electrical codes) require the use of UL Listed enclosures and components. These requirements can apply to a vast range of electronic and electrical equipment — from consumer electronics to industrial control panels — and they help protect consumer safety by ensuring that manufacturers and builders use high-quality materials to create their products.

Verifying That Your Electrical Enclosure Is UL Listed

Polycase makes it simple to verify the UL Listed status of any enclosure. Find Polycase’s UL file number in the description on the enclosure’s product page and then enter it in UL’s Product iQ database. You’ll have the option to access each enclosure’s testing data and UL certification at your convenience.

Note that certain configurations and modifications can affect an enclosure’s NEMA and/or IP rating. UL performs its tests on stock models unless otherwise specified, so some custom enclosure modifications may make the enclosure’s UL listing invalid. To protect your enclosure’s gasket seal and other important protective features, be sure to see our range of enclosure accessories.

Our selection includes hundreds of UL Listed enclosure models for both indoor use and outdoor use. Browse them all on this page, or read our guide to UL Listed vs. UL Certification to learn about the various types of UL designations.

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  1. AN-11F Black diecast aluminum enclosure with flanges for wall mounting - 1.97 x 1.77 x 1.12 inches
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    AN-11F
    As low as $13.63 per unit
    1.97 x 1.77 x 1.12 in.
    50.04 x 44.96 x 28.45 mm.
    Material: Aluminum
  2. AN-11P Black diecast aluminum enclosure for electronics - 1.97 x 1.77 x 1.12 inches
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    AN-11P
    As low as $5.91 per unit
    1.97 x 1.77 x 1.12 in.
    50.04 x 44.96 x 28.45 mm.
    Material: Aluminum
  3. black aluminum enclosure
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    AN-18F
    As low as $13.72 per unit
    2.19 x 1.61 x 1.22 in.
    55.63 x 40.89 x 30.99 mm.
    Material: Aluminum
  4. AN-18P Black diecast aluminum enclosure for electronics - 2.19 x 1.61 x 1.22 inches
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    AN-18P
    As low as $6.17 per unit
    2.19 x 1.61 x 1.22 in.
    55.63 x 40.89 x 30.99 mm.
    Material: Aluminum
  5. WA-20*16 Gray indoor NEMA 4x waterproof enclosure for electronics - 2.28 x 2.52 x 1.38 inches
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    WA-20
    As low as $4.66 per unit
    2.28 x 2.52 x 1.38 in.
    57.91 x 64.01 x 35.05 mm.
    Material: ABS
  6. ABS plastic junction box
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    WA-20F
    As low as $4.66 per unit
    2.28 x 2.52 x 1.38 in.
    57.91 x 64.01 x 35.05 mm.
    Material: ABS
  7. WC-20*1508 Gray with Clear Cover outdoor NEMA 4x enclosure for electronics - 2.28 x 2.52 x 1.38 inches
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    WC-20
    As low as $5.74 per unit
    2.28 x 2.52 x 1.38 in.
    57.91 x 64.01 x 35.05 mm.
    Material: Polycarbonate
  8. WC-20F*1508 Gray with Clear Cover outdoor NEMA 4x enclosure for electronics - 2.28 x 2.52 x 1.38 inches
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    WC-20F
    As low as $5.48 per unit
    2.28 x 2.52 x 1.38 in.
    57.91 x 64.01 x 35.05 mm.
    Material: Polycarbonate
  9. WP-20*15 Gray outdoor NEMA 4x waterproof enclosure - 2.28 x 2.52 x 1.38 inches
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    WP-20
    As low as $5.59 per unit
    2.28 x 2.52 x 1.38 in.
    57.91 x 64.01 x 35.05 mm.
    Material: Polycarbonate
  10. WP-20F*15 Gray outdoor NEMA 4x waterproof enclosure - 2.28 x 2.52 x 1.38 inches
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    WP-20F
    As low as $5.21 per unit
    2.28 x 2.52 x 1.38 in.
    57.91 x 64.01 x 35.05 mm.
    Material: Polycarbonate
  11. AN-01F Black diecast aluminum enclosure with flanges for wall mounting - 2.52 x 2.28 x 1.38 inches
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    AN-01F
    As low as $6.25 per unit
    2.52 x 2.28 x 1.38 in.
    64.01 x 57.91 x 35.05 mm.
    Material: Aluminum
  12. electronics enclosure

    Take your enclosure from plain to powerful

    with Polycase customization services

    Learn More
  13. AN-01P Black diecast aluminum enclosure for electronics - 2.52 x 2.28 x 1.38 inches
    Add to Compare Add to Wish List
    AN-01P
    As low as $5.91 per unit
    2.52 x 2.28 x 1.38 in.
    64.01 x 57.91 x 35.05 mm.
    Material: Aluminum
  14. SK-11-02 Gray outdoor NEMA rated electrical junction box with knockouts - 2.56 x 2.56 x 2.24 inches
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    SK-11
    As low as $8.51 per unit
    2.56 x 2.56 x 2.24 in.
    65.02 x 65.02 x 56.90 mm.
    Material: Polycarbonate
  15. Small black plastic waterproof enclosure
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    HD-22F
    As low as $3.88 per unit
    2.63 x 2.63 x 1.63 in.
    66.80 x 66.80 x 41.40 mm.
    Material: Polycarbonate
  16. ML-22F*15 Gray outdoor waterproof enclosure rated NEMA 4x and NEMA 6P - 2.63 x 2.63 x 1.63 inches
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    ML-22F
    As low as $5.80 per unit
    2.63 x 2.63 x 1.63 in.
    66.80 x 66.80 x 41.40 mm.
    Material: Polycarbonate
  17. AN-19F Black diecast aluminum enclosure with flanges for wall mounting - 3.13 x 2.93 x 2.05 inches
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    AN-19F
    As low as $18.49 per unit
    3.13 x 2.93 x 2.05 in.
    79.50 x 74.42 x 52.07 mm.
    Material: Aluminum
  18. AN-19P Black diecast aluminum enclosure for electronics - 3.13 x 2.93 x 2.05 inches
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    AN-19P
    As low as $10.49 per unit
    3.13 x 2.93 x 2.05 in.
    79.50 x 74.42 x 52.07 mm.
    Material: Aluminum
  19. WA-31*16 Gray indoor NEMA 4x waterproof enclosure for electronics - 3.23 x 3.15 x 2.17 inches
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    WA-31
    As low as $6.32 per unit
    3.23 x 3.15 x 2.17 in.
    82.04 x 80.01 x 55.12 mm.
    Material: ABS
  20. WA-31F*16 Gray indoor NEMA 4x waterproof enclosure for electronics with wall mount flange - 3.23 x 3.15 x 2.17 inches
    Add to Compare Add to Wish List
    WA-31F
    As low as $6.92 per unit
    3.23 x 3.15 x 2.17 in.
    82.04 x 80.01 x 55.12 mm.
    Material: ABS
  21. WC-31*1508 Gray with Clear Cover outdoor NEMA 4x enclosure for electronics - 3.23 x 3.15 x 2.17 inches
    Add to Compare Add to Wish List
    WC-31
    As low as $8.92 per unit
    3.23 x 3.15 x 2.17 in.
    82.04 x 80.01 x 55.12 mm.
    Material: Polycarbonate
  22. WC-31F*1508 Gray with Clear Cover outdoor NEMA 4x enclosure for electronics - 3.23 x 3.15 x 2.17 inches
    Add to Compare Add to Wish List
    WC-31F
    As low as $9.36 per unit
    3.23 x 3.15 x 2.17 in.
    82.04 x 80.01 x 55.12 mm.
    Material: Polycarbonate
  23. WP-31*15 Gray outdoor NEMA 4x waterproof enclosure - 3.23 x 3.15 x 2.17 inches
    Add to Compare Add to Wish List
    WP-31
    As low as $8.92 per unit
    3.23 x 3.15 x 2.17 in.
    82.04 x 80.01 x 55.12 mm.
    Material: Polycarbonate
  24. electronics enclosure

    Take your enclosure from plain to powerful

    with Polycase customization services

    Learn More

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