Broan 508 Through the Wall Fan Eliminate humidity or tobacco smoke from recreation rooms, workshops, or cooking odors from kitchens with this powerful utility ventilator. Features permanently lubricated motor and rugged steel housing. Paint the low-profile white polymeric grill to match your decor. Housing adjusts to fit walls from 4-1/2" to 9-1/2" Specially designed polymeric fan blade. Built in damper minimizes backdrafts fro energy efficiency. Wall switch or variable speed wall controls sold separately. 270 CFM 6.0 Sones Housing dimensions: 10-3/8" round Grill dimensions: 13-1/2" square 1.7 amps Direct Discharge PLEASE NOTE THE SHIPPING AND RETURN POLICIES NEAR THE BOTTOM OF OUR HOME PAGE.