Broan Model 512M Through-The-Wall FanEliminate humidity from laundry rooms, tobacco smoke from rec rooms and workshops, or cooking fumes from kitchens with Broan's high-efficiency utility ventilators. This fan can be installed in outside walls from 5-1/4" to 10" thick. Walls less than 6" thick will not use the adjustable duct. Choose a location with no obstructions, such as wall studs, plumbing or electrical wiring. FEATURES: 70 CFM 3.5 Sones. Easy exterior wall installation. Features a white interior grille and louvered exterior wall cap with built-in bird screen. 6" diameter flexible aluminum duct included. Accommodates walls from 5-1/4" to 10". Ventilates rooms up to 65 square feet.FEATURES:INTERIOR GRILLE: White polymeric - complements any decor Spin-on installationMOTOR: Plug-in, thermally protected, permanently lubricated Quiet, durable polymeric blade Motor assy. features fast, easy "twist-lock" installation .7 AmpsHOUSING: Steel housing finished with electrically-bonded epoxy paint Can be installed in outside walls from 5¼" to 10" thick (walls less than 6" thick will not use the 6" dia. flexible duct)EXTERIOR WALL CAP: Louvered white polymeric material Intergral birdscreen 6" dia. flexible ducting included