Mounting a light on a soffit or finished ceiling normally means cutting in a box. The Arlington MB8 is an 8 in round mounting block, a medallion and electrical box in one, that screws straight to the soffit or ceiling joist with no drywall cut-out. It is paintable, UV-rated plastic for interior or exterior use. For Canadian installs it is CSA rated 50 lb fan or fixture; the 70 lb fan and 200 lb fixture figures are its UL rating.
Why electricians pick it
- Medallion and 6.1 cu in box combined; mounts directly to a soffit or ceiling joist.
- CSA rated 50 lb fan or fixture; UL rated 70 lb fan and 200 lb fixture.
- UV-rated, paintable plastic for interior or exterior locations.
- Supports flood lights, smoke detectors, fans and light fixtures.
- Includes two #10 x 3 in wood screws, a #8 x 1-1/2 in screw, two knockouts and an NM94 connector.
Specifications
| Spec |
Detail |
| Brand |
Arlington Industries |
| Model |
MB8 |
| Type |
8 in mounting block with built-in fan/fixture box |
| CSA rating (Canada) |
50 lb fan / 50 lb fixture |
| UL rating (US) |
70 lb fan / 200 lb fixture |
| Box volume |
6.1 cu in (flat mount) |
| Max conductors (Arlington chart) |
3 x #14 AWG |
| Size |
8 in round |
| Material / colour |
UV-rated plastic, white, paintable |
| Location |
Interior or exterior |
Pro tip from the counter
Drive the two 3 in screws into the joist or framing behind the soffit, not just the soffit panel. Vinyl or aluminum soffit can't carry a fan or flood light, and the CSA 50 lb rating assumes the block is fastened to solid framing.
Best for: soffit flood lights and security lights, porch and covered patio ceiling fans, retrofit fixtures without cutting drywall, exterior smoke or motion devices
Downloads: Spec sheet (PDF) · Arlington fan/fixture box ratings chart (PDF)
We ship from Vaughan, ON to anywhere in Canada. Contractors can get trade pricing through a quote or by calling (905) 553-7171.