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Outdoor Junction Boxes

Protect sensitive electrical connections in any environment, including underground, with a Polycase outdoor junction box. Designed to meet NEMA and IP ratings, our waterproof junction boxes are ideal for outdoor use but versatile enough for indoor applications too. Choose from a variety of styles, including models with hinged covers, knockouts, wall-mount, or pole-mount options. Available in plastic, aluminum, and steel, and offered in a range of sizes, Polycase makes it easy to find the perfect electrical junction box for your needs. Read our guide to electrical junction box types.

Looking for tips to help you choose the ideal junction box for your application? Find out more key info on junction boxes below.

Key Features and Applications of Outdoor Junction Boxes

Depending on its size, your facility might have dozens, hundreds, or even thousands of key electrical connections that need protection from environmental conditions. Numerous types of connections require junction boxes — from electrical wiring splices to electrical outlet boxes to switch boxes and beyond. Read our guide on junction box types to learn more about the many specific types of junction boxes on the market, including indoor electrical enclosures, cases for light fixtures, receptacles, and other applications.

It’s critical to match the design features your application requires to a high-quality junction box that fulfills them. For example, a metal junction box is typically a must-have if your electrical connectors require RFI shielding and/or you’re using a metal-sheathed cable. Meanwhile, a plastic junction box is generally the standard choice for applications with non-metallic cable and cable clamps. However, the PVC boxes common in residential applications often aren’t up to the rigors of outdoor and industrial use, which makes materials like polycarbonate a better choice for heavy-duty applications.

Weather and hazard resistance is also a major factor for junction boxes used in demanding applications. Features such as weatherproof gaskets provide critical protection, and NEMA or IP ratings serve as useful guidelines for finding an enclosure with the right protective features. To learn more about choosing an enclosure with the right protective qualities, check out our guide to evaluating junction boxes.

Choosing an Outdoor Junction Box from Polycase

Polycase offers hundreds of weatherproof box models in different shapes, sizes, styles, and NEMA/IP ratings. From 304 stainless steel to polycarbonate plastic with a fiberglass reinforced base, we provide a broad range of durable material choices. On top of the previously mentioned features, our selection also includes options such as locking box covers for secure access control.

Browse our outdoor enclosures to find the right electrical box for your application. Need customized cutouts or printing on your project? Get started with an instant quote now on our in-house enclosure customization.

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  1. AN-11F Natural diecast aluminum enclosure with flanges for wall mounting - 1.97 x 1.77 x 1.12 inches
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    AN-11F Diecast Aluminum NEMA Enclosure
    As low as $13.63 per unit
    Internal: 1.7" x 1.5" x 0.9"
    43 x 38 x 25 mm
    External: 1.9" x 1.7" x 1.1"
    50 x 45 x 28 mm
    Material: Aluminum
  2. AN-11P Natural diecast aluminum enclosure for electronics - 1.97 x 1.77 x 1.12 inches
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    AN-11P Diecast Aluminum NEMA Enclosure
    As low as $5.91 per unit
    Internal: 1.7" x 1.5" x 0.9"
    43 x 38 x 25 mm
    External: 1.9" x 1.7" x 1.1"
    50 x 45 x 28 mm
    Material: Aluminum
  3. AN-18F Natural diecast aluminum enclosure with flanges for wall mounting - 2.19 x 1.61 x 1.22 inches
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    AN-18F Diecast Aluminum NEMA Enclosure
    As low as $13.72 per unit
    Internal: 1.8" x 1.3" x 1.0"
    46 x 33 x 27 mm
    External: 2.1" x 1.6" x 1.2"
    56 x 41 x 31 mm
    Material: Aluminum
  4. AN-18P Natural diecast aluminum enclosure for electronics - 2.19 x 1.61 x 1.22 inches
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    AN-18P Diecast Aluminum NEMA Enclosure
    As low as $6.17 per unit
    Internal: 1.8" x 1.3" x 1.0"
    46 x 33 x 27 mm
    External: 2.1" x 1.6" x 1.2"
    56 x 41 x 31 mm
    Material: Aluminum
  5. WC-20
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    WC-20 Outdoor Enclosure with Clear Cover
    As low as $5.74 per unit
    Internal: 1.9" x 2.2" x 1.1"
    50 x 56 x 30 mm
    External: 2.2" x 2.5" x 1.3"
    58 x 64 x 35 mm
    Material: Polycarbonate
  6. WC-20F
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    WC-20F Outdoor Enclosure with Clear Cover
    As low as $5.48 per unit
    Internal: 1.9" x 2.2" x 1.1"
    50 x 56 x 30 mm
    External: 2.2" x 2.5" x 1.3"
    58 x 64 x 35 mm
    Material: Polycarbonate
  7. WP-20
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    WP-20 Polycarbonate NEMA Enclosure
    As low as $5.59 per unit
    Internal: 1.9" x 2.2" x 1.1"
    50 x 56 x 30 mm
    External: 2.2" x 2.5" x 1.3"
    58 x 64 x 35 mm
    Material: Polycarbonate
  8. WP-20F
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    WP-20F Polycarbonate NEMA Enclosure
    As low as $5.21 per unit
    Internal: 1.9" x 2.2" x 1.1"
    50 x 56 x 30 mm
    External: 2.2" x 2.5" x 1.3"
    58 x 64 x 35 mm
    Material: Polycarbonate
  9. AN-01F Natural diecast aluminum enclosure with flanges for wall mounting - 2.52 x 2.28 x 1.38 inches
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    AN-01F Diecast Aluminum NEMA Enclosure
    As low as $6.25 per unit
    Internal: 2.1" x 1.8" x 1.2"
    54 x 47 x 30 mm
    External: 2.5" x 2.2" x 1.3"
    64 x 58 x 35 mm
    Material: Aluminum
  10. AN-01P Natural diecast aluminum enclosure for electronics - 2.52 x 2.28 x 1.38 inches
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    AN-01P Diecast Aluminum NEMA Enclosure
    As low as $5.91 per unit
    Internal: 2.1" x 1.8" x 1.2"
    54 x 47 x 30 mm
    External: 2.5" x 2.2" x 1.3"
    64 x 58 x 35 mm
    Material: Aluminum
  11. 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 Enclosure with Knockouts
    As low as $8.51 per unit
    Internal: 2.2" x 2.2" x 1.7"
    56 x 56 x 45 mm
    External: 2.5" x 2.5" x 2.2"
    65 x 65 x 57 mm
    Material: Polycarbonate
  12. outdoor electrical enclosure

    ZH SERIES | NO FEET OPTION

    The ZH Series is now available with more mounting options to suit your needs

    SHOP NOW
  13. Small black plastic waterproof enclosure
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    HD-22F NEMA Polycarbonate Enclosure
    As low as $3.88 per unit
    Internal: 2.1" x 2.1" x 1.3"
    55 x 55 x 34 mm
    External: 2.6" x 2.6" x 1.6"
    67 x 67 x 41 mm
    Material: Polycarbonate
  14. 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 Outdoor NEMA Enclosure
    As low as $5.80 per unit
    Internal: 2.2" x 2.2" x 1.3"
    58 x 58 x 35 mm
    External: 2.6" x 2.6" x 1.6"
    67 x 67 x 41 mm
    Material: Polycarbonate
  15. AN-19F Natural diecast aluminum enclosure with flanges for wall mounting - 3.13 x 2.93 x 2.05 inches
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    AN-19F Diecast Aluminum NEMA Enclosure
    As low as $18.49 per unit
    Internal: 2.7" x 2.5" x 1.9"
    69 x 64 x 49 mm
    External: 3.1" x 2.9" x 2.0"
    80 x 74 x 52 mm
    Material: Aluminum
  16. AN-19P Natural diecast aluminum enclosure for electronics - 3.13 x 2.93 x 2.05 inches
    Add to Compare Add to Wish List
    AN-19P Diecast Aluminum NEMA Enclosure
    As low as $10.49 per unit
    Internal: 2.7" x 2.5" x 1.9"
    69 x 64 x 49 mm
    External: 3.1" x 2.9" x 2.0"
    80 x 74 x 52 mm
    Material: Aluminum
  17. WC-31
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    WC-31 Outdoor Enclosure with Clear Cover
    As low as $8.92 per unit
    Internal: 2.9" x 2.8" x 1.9"
    74 x 72 x 49 mm
    External: 3.2" x 3.1" x 2.1"
    82 x 80 x 55 mm
    Material: Polycarbonate
  18. WC-31F
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    WC-31F Outdoor Enclosure with Clear Cover
    As low as $9.36 per unit
    Internal: 2.9" x 2.8" x 1.9"
    74 x 72 x 49 mm
    External: 3.2" x 3.1" x 2.1"
    82 x 80 x 55 mm
    Material: Polycarbonate
  19. WP-31
    Add to Compare Add to Wish List
    WP-31 Polycarbonate NEMA Enclosure
    As low as $8.92 per unit
    Internal: 2.9" x 2.8" x 1.9"
    74 x 72 x 49 mm
    External: 3.2" x 3.1" x 2.1"
    82 x 80 x 55 mm
    Material: Polycarbonate
  20. WP-31F
    Add to Compare Add to Wish List
    WP-31F Polycarbonate NEMA Enclosure
    As low as $9.36 per unit
    Internal: 2.9" x 2.8" x 1.9"
    74 x 72 x 49 mm
    External: 3.2" x 3.1" x 2.1"
    82 x 80 x 55 mm
    Material: Polycarbonate
  21. SG-10-02 Gray polycarbonate electrical enclosure - 3.31 x 3.23 x 2.17 inches
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    SG-10 Weatherproof NEMA Enclosure
    As low as $13.31 per unit
    Internal: 2.9" x 2.8" x 1.8"
    75 x 73 x 47 mm
    External: 3.3" x 3.2" x 2.1"
    84 x 82 x 55 mm
    Material: Polycarbonate
  22. SG-17-02 Gray plastic electrical box for outdoor applications - 3.31 x 3.23 x 3.31 inches
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    SG-17 Weatherproof NEMA Enclosure
    As low as $14.72 per unit
    Internal: 2.9" x 2.8" x 3.0"
    74 x 72 x 77 mm
    External: 3.3" x 3.2" x 3.3"
    84 x 82 x 84 mm
    Material: Polycarbonate
  23. AN-00F Natural diecast aluminum enclosure with flanges for wall mounting - 3.54 x 1.42 x 1.18 inches
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    AN-00F Diecast Aluminum NEMA Enclosure
    As low as $5.91 per unit
    Internal: 3.0" x 0.9" x 0.9"
    78 x 24 x 25 mm
    External: 3.5" x 1.4" x 1.1"
    90 x 36 x 30 mm
    Material: Aluminum
  24. outdoor electrical enclosure

    ZH SERIES | NO FEET OPTION

    The ZH Series is now available with more mounting options to suit your needs

    SHOP NOW

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knockout electrical enclosure with graphics and machining

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