110 CFM Power Crawl Space Fan Porcelain Tile Base Required

Base Required

carbide blade can cut 2 x 4 s at a 45° angle in a single pass

Clear flashing to match different panel colors

a metal blade

110 CFM Power Crawl Space Fan Porcelain Tile Base RequiredThe Tjernlund UnderAire Series V1 Crawl Space Ventilator is designed to circulate fresh outdoor air underneath homes and porches. Excessive humidity levels in Crawl Spaces is the leading cause of premature rotting of support columns, joists, floors and beam supports. Humidity can promote fungus growth and increased termite activity. Humidity may also cause plumbing failures due to rust and corrosion. Constant operation helps vent radon gases, treated