The Arlington FBS415S is a steel octagonal fan and fixture box with a side-mounting bracket: it fastens to the side of a joist in new work and gives 14.6 cu in at 1-1/2 in depth. It is CSA rated for a 50 lb fan or fixture, the rating Canadian installers must work to. Arlington's rating chart lists this S (side-bracket) version at 70 lb for both fan and fixture under UL, not the 200 lb fixture figure of the under-joist FBS415.
Why electricians pick it
- Side-mount bracket screws to the face of the joist; ships ready to install with screws parked in place.
- CSA rated 50 lb fan or fixture.
- Steel octagon box, 1-1/2 in deep, 14.6 cu in.
- Includes NM cable connector, mud cover, four installation screws and two fan/fixture bracket screws.
- Combination hex/Phillips head screws for power drivers.
Specifications
| Spec |
Detail |
| Brand |
Arlington Industries |
| Model |
FBS415S |
| Type |
Steel octagonal fan/fixture joist box, side-mount bracket |
| CSA rating (Canada) |
50 lb fan / 50 lb fixture |
| UL rating (US) |
70 lb fan / 70 lb fixture (Arlington rating chart) |
| Volume / depth |
14.6 cu in / 1-1/2 in |
| Max conductors (Arlington chart) |
7 x #14, 6 x #12, 6 x #10 |
| Construction |
New work only |
| Finish |
Plated steel |
| Arlington pack |
25 pcs |
Pro tip from the counter
Don't sell this box off a 200 lb chandelier claim. The S suffix is the side-bracket version, which Arlington's chart rates lower under UL than the under-joist FBS415, and in Canada both carry a CSA rating of 50 lb. Anything heavier needs a support system rated for the weight.
Best for: new-work ceiling fans and light fixtures, side-of-joist box placement, steel box specifications, residential rough-in
Downloads: Spec sheet (PDF) · Arlington fan/fixture box ratings chart (PDF)
Stocked in Vaughan, ON and shipped across Canada. Contractors can get trade pricing through a quote or at (905) 553-7171.