Broan-NuTone 506 10" Chain-Operated 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 t he 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 506 10" Chain-Operated Wall Fan Features: • Utility Fans, Pull-Chain • 470 CFM, 10" Fan, 8.0 Sones, 13-1/2" square plastic grille • 470 CFM 8.0 Sones • Specially designed polymeric fan blade • Housing features foam-insulated door for energy efficiency • Pull-chain opens door a nd turns on fan – no wall switch to wire • Housing adjusts to fit walls from 4 -1/2" to 9-1/2" thick