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Grey aluminium two-gang extension box, square corners, shallow depth

Bell

Bell 5407-0 Extension Box 2 Gang Aluminium 16.3 cu in

SKU CH-6014-H0NGW

A weatherproof aluminium extension box with two gangs and 16.3 cubic inches capacity

  • TypeElectrical Boxes & Covers
  • Weatherproof design protects outdoor connections
  • 3 cubic inch capacity fits more wiring
  • Two-gang layout supports dual devices
  • Aluminium construction resists corrosion
  • Compact 4.5 by 4.58 by 1 inch profile

Bell 5407-0 Aluminium Extension Box

The Bell 5407-0 is a weatherproof aluminium extension box designed for outdoor electrical installations. It provides 16.3 cubic inches of internal capacity across two gangs to accommodate wiring connections.

Suitable for installers needing extra depth

This unit suits electricians or DIY users extending an existing two-gang box in damp or exposed locations. It is not intended for single-gang applications, indoor-only projects, or installations requiring a deeper enclosure than the one-inch profile allows.

Grey aluminium construction with fixed dimensions

The grey aluminium body measures 4.5 inches long, 4.58 inches wide and one inch deep, forming a rigid weatherproof ring. No mounting hardware, gaskets or covers are included, so the installer must supply compatible fasteners and a matching cover plate.

Highlights

  • Weatherproof design protects outdoor connections
  • 3 cubic inch capacity fits more wiring
  • Two-gang layout supports dual devices
  • Aluminium construction resists corrosion
  • Compact 4.5 by 4.58 by 1 inch profile

Specifications

BrandBELL OUTDOOR
TypeElectrical Boxes & Covers

Questions about this item

Does the 5407-0 extension box mount directly to an existing two-gang device box?

Yes, it is designed as a two-gang box extension that fits over a standard two-gang device box to add wiring capacity.

Will the 1-inch depth of the 5407-0 allow older shallow devices to sit flush with the new cover?

The extension adds 1 inch of depth, so the finished wall surface moves outward by that amount; existing devices will sit 1 inch deeper behind the cover plane.

How can I confirm the 16.3 cubic inch capacity meets code for the number of conductors I am installing?

Count each current-carrying conductor as one volume allowance, add allowances for clamps, devices and grounding conductors, then verify the total does not exceed 16.3 cubic inches.

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