Products include: The 6inch or 8inch hooded wall vent cap outside for house fits for 6inch or 8inch dryer vent pipe/dryer vent hose/Kitchen Range Hood wall pipe, The extend 8-1/4 inch steel dryer wall vent pipe for wall vent installation, easily attaches to solid metal pipe or flexible ducting.Pls measure your duct diameter before ordering the dryer vent cover exterior to ensure a proper fit. Easy to Install: No need to drill holes; The exhaust vent cap comes with 4 pre-drilled holes on the flange and 6 screws to easily be attached by using screw in each corner; Wall exhaust vent comes with a aluminum foil tape used to fix and seal the vent duct pipe connection for max ventilation efficiency. Reliable Hooded Exhaust Vent Cap: The outdoor wall vent includes a spring loaded backdraft damper with foam gasket; Allow exhaust when open and prevent outside air backflow when closed; The foam gasket reduce noise and provide quiet operation; Smooth edge ensure no-gap connection to the wall vent cap for better protection. Durable Galvanized Steel Wall Exhaust Vent Cover: Exterior wall vent constructed from high-quality 28 gauge galvanized steel featuring rust-proof, anti-corrosion and withstand extreme condition; Durable Steel mesh screen keeps rodents birds insects and squirrels out. Wide Application: Wide mouth of low profile vent covers is designed for optimum exhausting flow and idesl for bathroom exhaust fan vent, dryer wall vent, kitchen range hood wall vent, kitchen stove hood wall vent, basement shop wall exhaust, Garage exhaust application,ect.