Dryer Vent Cover Outside 4" inch Mouse Proof Dryer Vent Closure Natural Energy Saving Dryer Vent Seal Hood for Home Exterior

SAVE MONEY & ENERGY: One of the main functions of this dryer vent cover with the guard is to keep cold or hot air out of your house. The laundry room is no longer a meat locker in winter! Its energy efficiency will also be a plus. It fits 4 inches of tubes.
AIR LEAKAGE PREVENTION: The inner flapper rises and allows air to escape when the dryer is pushing air, and when the dryer is off, the flapper falls and seals perfectly by being 100% in line with gravity.
REFUSE ANIMALS: This Professional dryer vent closure can prevent the outside cold air and indoor warm air from leaking. Safeguard your house from unwelcome little things that might try to crawl in through the ventilation pipeline.
FAIRLY EASY INSTALLATION: Featuring a square base with pre-drilled holes, the vent cover must be installed in a vertical position and you can use caulk or foam adhesive to seal the holes you make!
WORKS WELL IN THE BAD WEATHER: Operates well on cold, rainy, snowy days. It can block cold air to protect your washing machine pipes from freezing.

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