This Tjernlund Crawl Space Air Supply Fan revitalizes stale air in crawl spaces with fresh outdoor air. U.S.A. Air Delivery CFM 110, Watts 20, Remote Included No, Amps 0.3, Speeds qty. 1, Volts 120, Power Cord ft. 6, Dimensions W x D x H in. 18 x 10 x 4. Installs on inside or outside passive crawl space vent openings or mounts to floor joists Includes paintable, heavy-duty galvanized steel mounting plate and freeze protection thermostat Works with Tjernlund UnderAire crawl space ventilators, Items# 250744, 250745 and 250746 sold separately 18in.W x 10in.D x 4in.H.
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