Bridgeport Fittings NSB SFS-75 Electrical Outlet Boxes

Bridgeport Fittings NSB SFS-75 Square Swivel Fixture Box is a steel, 3/4" opening square box designed to mount to the bottom of a joist for secure, adjustable ceiling installations. It features a 4-1/16" diameter cover and a 3/4" conduit opening, providing wiring access through the joist cavity. The installation uses a bracket that attaches directly to the joist, delivering a rigid mounting platform for fixtures that require swiveling to align with the room. This SFS-75 designation identifies Bridgeport's square swivel fixture family, commonly used in residential and commercial ceilings where directional positioning of lighting fixtures or outlets is needed to achieve proper illumination or outlet orientation. The compact 4-1/16" cover diameter helps fit typical joist-and-ceiling layouts while maintaining robust steel construction for durable service.