Vessa Louvered Vent Cover — 4" & 6", Gravity Damper with Screen

The vent cap is the last thing on a duct run and the first thing weather finds — and Vessa's louvered vent cover is built to hold that line. Three gravity-hinged damper flaps swing open on the exhaust stream and fall shut the moment the dryer or fan stops, sealing off the cold air, rain, and snow that a fixed grille invites straight back down the duct. Behind them sits a metal mesh screen, so the same opening that vents your laundry doesn't become a nesting cavity for birds, mice, or wasps in the wall. The ABS body won't rust, streak, or bleed corrosion down the siding the way a painted-steel cap eventually does, and four corner screw holes with the screws included mean a swap-out takes minutes with a driver. Available in 4-inch and 6-inch to match the two most common vent sizes, it's the quiet part of the run that decides whether the duct stays a duct — or turns into an open door.