Broan-NuTone 508 10" Through Wall Fan Since their beginning in 1932, Broan has pioneered many of the product innovations now established as standards of the industry. Today, Broan carries on the commitment to provide the finest products in the industry.Eliminate humidity from laundry rooms, tobacco smoke from rec rooms and workshops, or cooking fumes from kitchens with Broan's high-efficiency utility ventilators.Broan-NuTone 508 10" Through Wall Fan Features:; Utility Fans, Wall; 270 CFM, 10" Fan, 6.0 Sones, 13-1/2" square plastic grille; 270 CFM 6.0 Sones; Specially designed polymeric fan blade; Housing adjusts to fit walls from 4-1/2" to 9-1/2" thick; Built-in damper minimizes backdrafts.