Joist Mounting; One-Box Brand; Approval UL, CSA; Size 16 to 24 Inch W X 3.408 Inch H; Standard Package Quantity 5; FB Model

Joist Mounting Vapor Box with Adjustable Steel Bracket for Fans and Fixtures This non-metallic vapor box by Arlington Industries is designed for secure joist mounting of fans or fixtures in new construction. It features an adjustable plated steel bracket that fits joists spaced from 16 to 24 inches on center, enabling precise positioning along the bracket. The box includes a built-in flange with gasket material that forms a protective barrier against air infiltration, helping electrical distributors and lighting solutions providers meet residential energy codes. It is suitable for installations with double drywall and comes with captive fan/fixture bracket installation screws and an installed NM cable connector with gasket material. This product supports UL and CSA ratings for fan and fixture load capacities. Specifications Manufacturer: Arlington Industries Manufacturer Part #: FBR425F Product Weight: 9.85 lbs Color: Black Material: Plastic Width: 6.250 inches Height: 3.408 inches Country of Origin: United States Made in USA: Yes UL Fan Rating: 70 lbs at 24" o.c., 110 lbs at 16" o.c. UL Fixture Rating: 90 lbs at 24" o.c., 150 lbs at 16" o.c. CSA Rating: 50 lbs fan/fixture at 16"-24" o.c. Compatible Joist Spacing: 16" to 24" on center Installation: Joist mount with supplied screws Fire Rating: 2-hour fire rating Features Non-metallic, non-conductive plastic box with fully adjustable steel bracket Built-in flange with gasket material attached to prevent air infiltration Captive fan/fixture bracket installation screws included Installed NM cable connector with gasket material Fast and secure installation directly to wood or steel joists Allows flush ceiling installations in new construction UL and CSA listed for safety and performance Meets residential codes requiring vapor barrier protection Downloads & Links Specification Sheet Catalog Page FBR425F Line Drawing