Steel City 54151CFB-BHL Ceiling Fan Box With Hanger, New Work, 15.8 in³

It's built as a ceiling fan box and ships with the hanger bar, so it's intended for fan support rather than light-fixture-only duty. The box itself is drawn steel, 4 inches diameter by 1/2 inch deep, with a 15.8 cubic inch volume.

New work. The hanger bar mounts between joists before the ceiling goes up, so it's for open framing on a new build or a gutted ceiling. If the drywall is already in place and you can't get above it, you need a retrofit (old work) fan brace instead.

Box fill is figured off the 15.8 cubic inch volume stated for this octagonal box. Under the NEC volume allowances that works out to eight 14 AWG conductors (2 in3 each) or seven 12 AWG (2.25 in3 each) before you subtract for the fixture stud, clamps, and grounds, each of which takes its own deduction. Fan wiring plus a switch leg can get tight, so count the fill before you close it up.

Yes, it carries UL listing E2969. That's the detail an institutional or inspection-driven job usually needs on the submittal for a fan-rated outlet box.

The 54151CFB-BHL is a shallow 4 inch round/octagon body, 1/2 inch deep, with 15.8 cubic inches of volume. Shallow bodies like this rely on the fan canopy to cover the wiring, so keep the splices neat and make sure your fan's canopy is deep enough to house the conductors. On a fan with a large pigtail bundle, a deeper box is the easier install.

The hanger comes with it, sold as a complete box and hanger assembly, one each per order. For a multi-unit fan rollout that means one line item per opening rather than pairing boxes and braces separately.

It's drawn steel with a silver finish. Plain steel boxes are for dry, indoor interior locations; for a covered porch, bathroom vent area, or anything exposed to moisture, use a box and cover rated for damp or wet locations.