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Knockout

Knockout Electrical Enclosures

Plastic knockout electrical enclosures from Polycase allow for the flexibility of onsite installation of cables, wiring or conduit. Each enclosure offers a variety of metric knockouts sizes that can simply be removed with a screwdriver. Our knockout control boxes, plastic junction boxes and OEM enclosures are all German-engineered by Spelsberg and designed for tough commercial and industrial applications.

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  1. 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 $6.60 per unit
    2.56 x 2.56 x 2.24 in.
    65.02 x 65.02 x 56.90 mm.
    Material: Polycarbonate
  2. SK-12-02 Gray knockout box for electrical and junction box applications - 3.7 x 2.56 x 2.24 inches
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    SK-12
    As low as $8.24 per unit
    3.70 x 2.56 x 2.24 in.
    93.98 x 65.02 x 56.90 mm.
    Material: Polycarbonate
  3. SK-25-02 Gray outdoor NEMA rated electrical junction box  - 3.7 x 2.56 x 3.1 inches
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    SK-25
    As low as $9.77 per unit
    3.70 x 2.56 x 3.10 in.
    93.98 x 65.02 x 78.74 mm.
    Material: Polycarbonate
  4. SK-13-02 Gray outdoor NEMA electrical box with knockouts  - 3.7 x 3.7 x 2.24 inches
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    SK-13
    As low as $8.73 per unit
    3.70 x 3.70 x 2.24 in.
    93.98 x 93.98 x 56.90 mm.
    Material: Polycarbonate
  5. SK-14-02 Gray waterproof junction box with knockouts - 4.33 x 4.33 x 2.6 inches
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    SK-14
    As low as $12.64 per unit
    4.33 x 4.33 x 2.60 in.
    109.98 x 109.98 x 66.04 mm.
    Material: Polycarbonate
  6. SK-15-02 Gray weatherproof electrical enclosure with knockouts - 5.12 x 3.7 x 2.24 inches
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    SK-15
    As low as $10.89 per unit
    5.12 x 3.70 x 2.24 in.
    130.05 x 93.98 x 56.90 mm.
    Material: Polycarbonate
  7. SK-26-02 Gray NEMA 4X rated knockout electrical box - 5.12 x 3.7 x 3.1 inches
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    SK-26
    As low as $13.74 per unit
    5.12 x 3.70 x 3.10 in.
    130.05 x 93.98 x 78.74 mm.
    Material: Polycarbonate
  8. SK-16-02 Gray electrical box with knockouts - 5.12 x 5.12 x 2.95 inches
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    SK-16
    As low as $15.64 per unit
    5.12 x 5.12 x 2.95 in.
    130.05 x 130.05 x 74.93 mm.
    Material: Polycarbonate
  9. SK-17-02 Gray NEMA rated junction box with knockouts - 7.09 x 3.7 x 2.24 inches
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    SK-17
    As low as $15.72 per unit
    7.09 x 3.70 x 2.24 in.
    180.09 x 93.98 x 56.90 mm.
    Material: Polycarbonate
  10. SK-27-02 Gray outdoor NEMA rated electrical box with knockouts - 7.09 x 3.7 x 3.1 inches
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    SK-27
    As low as $18.52 per unit
    7.09 x 3.70 x 3.10 in.
    180.09 x 93.98 x 78.74 mm.
    Material: Polycarbonate
  11. SK-29-02 Gray outdoor waterproof NEMA electrical junction box with knockouts - 7.09 x 4.33 x 3.45 inches
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    SK-29
    As low as $20.85 per unit
    7.09 x 4.33 x 3.45 in.
    180.09 x 109.98 x 87.63 mm.
    Material: Polycarbonate
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  13. SK-18-02 Gray NEMA 12K rated junction box with knockouts - 7.09 x 5.12 x 3.31 inches
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    SK-18
    As low as $23.95 per unit
    7.09 x 5.12 x 3.31 in.
    180.09 x 130.05 x 84.07 mm.
    Material: Polycarbonate
  14. SK-28-02 Gray knockout electrical outdoor enclosure - 7.17 x 7.09 x 2.42 inches
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    SK-28
    As low as $23.96 per unit
    7.17 x 7.09 x 2.42 in.
    182.12 x 180.09 x 61.47 mm.
    Material: Polycarbonate
  15. SK-19-02 Gray NEMA 12K outdoor box with knockouts - 7.17 x 7.09 x 3.54 inches
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    SK-19
    As low as $27.50 per unit
    7.17 x 7.09 x 3.54 in.
    182.12 x 180.09 x 89.92 mm.
    Material: Polycarbonate
  16. SK-20-02 Gray NEMA and IP rated junction box with knockouts - 10 x 7.09 x 2.48 inches
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    SK-20
    As low as $32.59 per unit
    10.00 x 7.09 x 2.48 in.
    254.00 x 180.09 x 62.99 mm.
    Material: Polycarbonate
  17. SK-23-02 Gray outdoor NEMA rated electrical knockout box  - 10 x 7.09 x 3.31 inches
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    SK-23
    As low as $35.36 per unit
    10.00 x 7.09 x 3.31 in.
    254.00 x 180.09 x 84.07 mm.
    Material: Polycarbonate
  18. SK-24-02 Gray waterproof NEMA 12K and NEMA 4X knockout box - 10 x 7.09 x 3.54 inches
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    SK-24
    As low as $36.79 per unit
    10.00 x 7.09 x 3.54 in.
    254.00 x 180.09 x 89.92 mm.
    Material: Polycarbonate
  19. SK-21-02 Gray outdoor NEMA rated knockout box - 10 x 7.09 x 4.37 inches
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    SK-21
    As low as $39.93 per unit
    10.00 x 7.09 x 4.37 in.
    254.00 x 180.09 x 111.00 mm.
    Material: Polycarbonate
  20. SK-22-02 Gray waterproof NEMA box with knockouts - 14.21 x 10 x 4.37 inches
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    SK-22
    As low as $84.79 per unit
    14.21 x 10.00 x 4.37 in.
    360.93 x 254.00 x 111.00 mm.
    Material: Polycarbonate
  21. SK-30-02 Gray polycarbonate and fiberglass outdoor electrical junction box with knockouts - 14.21 x 10 x 6.39 inches
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    SK-30
    As low as $103.56 per unit
    14.21 x 10.00 x 6.39 in.
    360.93 x 254.00 x 162.31 mm.
    Material: Polycarbonate

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