Saves energy and lower risk of frozen pipes. Hi-density polyethylene construction and Long-life corrosion-free metal parts, Heavy-duty aluminum material. Turn your wants into wins with BidFTA Online Auctions Quality you can trust. 【Excellent】This Foundation Auto Vent is after strict quality inspection and testing before leaving factory. 70°F and closes at approx.40°F . Helps prevent foundation decay. 【Upgraded】The Automatic Foundation Vent is equipped with stainless steel compression spring and adjustable screws for easy installation. Helps prevent foundation decay. Long-life corrosion-free construction. 16x8 Vent Cover Witten A-ELBLACK Automatic Foundation Vent - Crawlspace Vent Covers Cold Air Return Vent Covers 16 X 8 Air Vent - Crawl Space Vents - The Home Depot Second place side of vent into opening first. 70°F and closes at approx.40°F. Push the other side into place, making sure the vent flanges are firmly against wall. Finally Thread screws through until they touch side walls, then tighten as necessary to create a snug fit. 57 square inches of net free ventilating area. Quality you can trust Fits standard 8 X 16 inch vent openings. NFA (Sq. In.): 57 NFVA.
