December 16, 2014 – Arlington’s non-metallic FA426 In/Out Box for ceiling fixtures is fully adjustable to accommodate varying ceiling thicknesses, like single or double drywall.

The box is pre-set for a 1/2-in. ceiling, but the depth adjusts up to 1-1/2 in. before or after the ceiling is in place, with an always-accessible depth adjustment screw. The fixture-rated box mounts securely to a joist in new construction, and is UL/CSA listed.