VENMAR 509N Ventilation Fan Through Wall 1.5 A, 120 V

180 CFM 6.5 Sones. (HVI) Specially designed polymeric fan blade. Rugged steel housing with slim profile. Housing adjusts to fit walls from 4-1/2" to 9-1/2" thick. Built-in damper minimizes backdrafts. CSA certified for kitchen use when used with optional aluminum filter 99010042. Eliminate cooking fumes, tobacco smoke or excess humidity with Broan utility fans. All feature powerful, permanently lubricated motors in rugged steel housings. Low profile white polymeric grilles can be painted to match the surrounding wall colour. Efficient ventilation for a variety of applications.