KORA SMB20161 OCTAGON BOX WITH BRACKET 4”X 4”X 1 1/2”, 15 CU. INCH ( 54151-LB )

The SMB20161 has a rated capacity of 15 cubic inches. Under Canadian Electrical Code (CEC) requirements, box fill calculations must account for each conductor, device, and clamp inside the box. A 15 cu. in. octagon box is typically suitable for a limited number of conductors — commonly used for light fixture or fan junction points. If your application requires more conductors, a deeper or larger box may be needed. Our team can help you confirm the right box for your fill requirements.

The integrated bracket allows the octagon box to be mounted directly between ceiling joists or wall studs without requiring a separate bar hanger or additional hardware. The bracket spans the framing members and is secured with screws or nails, holding the box firmly in place for a clean, stable rough-in. This makes it ideal for new construction or renovation work where framing is accessible.

The SMB20161 is designed as a general-purpose octagon box suitable for light fixture wiring connections. However, if you intend to mount a ceiling fan, you should verify that the box is specifically rated for fan support, as ceiling fans require a box rated to bear dynamic loads (typically 35 lbs or more under CEC guidelines). Contact us with your application details and we'll help confirm whether this box meets your needs or recommend an appropriate fan-rated alternative.