The Lambro brown plastic hood clothes dryer exhaust vent kit featuring 4 in x 8 ft foil flex UL 2158A is ideal for venting through the wall. This kit is used for clothes dryer exhaust and other general venting applications that require moist air and humidity from exiting the home. The hood allows for maximum airflow while reducing back flow of exhaust air. The built in damper prevents back drafts while the removable guard prevents critters from entering the home through the vent. The plastic vent has a UV additive to prevent premature fading due to the sun.Maximum exhaust airflow, minimum back pressureFor new or replacement vent installations8 ft L flexible foil flex UL 2158A clothes dryer transition ductFoil flex duct has a maximum operating temperature of 257 deg FOpening and closing damper stays closed when not in useHinged and removable screen for easy cleaning11 in L pipe for through the wall installationAccessible screw installation holes, caulk friendly frameUV inhibitor is used to help prevent the premature fading of vent