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Gray aluminum electrical box with two opposing hubs

Killark

Killark SWB-4 Electrical Box 22 Cu-In 2 Hubs

SKU CH-ZCCF-0YHJA

Aluminium device box with two opposing hubs and 22 cubic-inch capacity, rated for hazardous locations and CSA/UL listed

  • Product typeElectrical Boxes & Covers
  • Aluminium construction resists corrosion for long outdoor life
  • Rated for hazardous locations to meet strict safety codes
  • Two 1/2-inch hubs simplify conduit entry on opposite sides
  • 22 Cu-In capacity fits standard 1-gang devices
  • UL and CSA listed for verified compliance

22 cu-in aluminum device box

The Killark SWB-4 is a single-gang metallic enclosure designed for hazardous-location wiring. Its aluminum construction resists corrosion while meeting CSA and UL listing requirements for safety compliance.

Two opposing 1/2-inch hubs

Two hubs positioned on opposite sides allow straight-through conduit runs without extra fittings. Integral mounting lugs secure the box directly to structural surfaces, reducing hardware and installation time.

22 cubic inches of wiring space

The 22 cu-in capacity accommodates multiple conductors and splices for typical single-gang device installations. Builders needing additional device gangs or larger conductor counts will require a higher-capacity enclosure.

How it compares

Measured against everything we stock in Electrical Enclosures & Cabinets, at today’s prices. Recalculated every night.

Price $57.99
Pricier than about 61% of the 1,411 comparable items (median $39.99).

Specifications

Product
Brand nameHUBBELL KILLARK
Product typeElectrical Boxes & Covers

Questions about this item

Will the aluminum lugs on this Killark SWB-4 box need replacement due to corrosion?

The aluminum construction with gray finish resists corrosion in typical environments; lugs are integral to the box and not a separate replaceable component.

What is the fill limit that restricts how many conductors I can install in this 22 Cu-In box?

The 22 cubic-inch capacity sets the maximum conductor fill per NEC rules; exceeding this volume violates the UL and CSA listings.

Does the aluminum body run hotter than steel when the circuit is loaded continuously?

Aluminum dissipates heat faster than steel, so the box runs cooler under sustained load; no active cooling is required for its rated hazardous-location use.

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