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Gray aluminum shallow electrical box with 3/4 inch hub and mounting holes

Hubbell Incorporated

Hubbell Incorporated KILLARK FSS-2 Electrical Box 3/4" Hub Shallow 2.87" W

SKU CH-273Y-Q8HZP

Shallow single-gang aluminum device box with 3/4-inch hub, 18 cubic-inch capacity, internal grounding screw and tapered threads

  • TypeElectrical Boxes
  • Shallow 2 in depth suits tight wall cavities
  • 18 cu in capacity fits standard device wiring
  • 3/4 in hub accepts rigid or EMT conduit
  • Gray aluminium body resists corrosion in damp areas
  • CSA and UL listed for code-compliant installations

Shallow single-gang box for 3/4" conduit

This aluminum device box accepts two 3/4-inch hubs and provides 18 cubic inches of internal volume for wiring. It is suited for surface-mounted installations where a shallow profile is required.

Gray aluminum body with tapered threads

The corrosion-resistant aluminum housing uses tapered threads to seal against moisture ingress. An internal grounding screw is included for bonding, and the shallow 2-inch depth keeps the assembly close to the mounting surface.

Mounting holes on 0.75-inch centers

Two mounting holes spaced 0.75 inches on center allow direct attachment to structural members or boxes. The 2.87-inch width and 4.62-inch length fit standard single-gang cover plates and device straps.

Highlights

  • Shallow 2 in depth suits tight wall cavities
  • 18 cu in capacity fits standard device wiring
  • 3/4 in hub accepts rigid or EMT conduit
  • Gray aluminium body resists corrosion in damp areas
  • CSA and UL listed for code-compliant installations

Specifications

BrandKILLARK
TypeElectrical Boxes

Questions about this item

How do I mount the box and where do people misplace the screws?

Use the 0.75 in. on-centre mounting holes to secure the box; the common error is drilling new holes instead of using the factory-pattern holes.

What part will need attention after years of service?

The internal grounding screw can loosen over time; re-torque it during periodic inspections to maintain the ground path.

At what fill level does the box hit its limit?

The 18 cu. in. capacity is reached when conductor volume equals that figure; exceeding it violates the CSA and UL listing.

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