4 Pcs Dryer Vent Louvers, 4 Inch Universal Dryer Vent Cover Replacement Slats, for Outdoor Exhaust Home Laundry Room Air Duct Repair Use

Block Backflow Wind: The dryer vent slats can automatically open when the dryer exhausts hot air and close tightly once the machine stops working. They effectively block cold outdoor wind from crawling into your ventilation duct;
4-inch Standard Size: The dryer vent slats is suitable for 4-inch. If your original vent slats are rusted, cracked, stuck, or lost, these panels can be installed as direct replacements without cutting or modification.
ABS Material: The dryer vent slats is made of ABS. It won’t develop rust, crack, or deform after long-term exposure outside your house;
Easy Installation: Just remove your old damaged louvers from the vent cover frame and snap the new panels into the reserved slots firmly;
Set: The set includes 4 pcs of dryer vent slats, which allow you to fix two separate dryer vent covers or store spare slats for future damage replacement;