18 in. x 9 in. Silver Galvanized Steel Crawl Space Fan Vent Crushed Stone smooth or mineral surface roll

smooth or mineral surface roll roofing

as a vertical wall

Package includes AG 600 Angle grinder with side handle (2100487) and quick lock (2149275)

lower drawer is double height

18 in. x 9 in. Silver Galvanized Steel Crawl Space Fan Vent Crushed Stone smooth or mineral surface rollThe Tjernlund UnderAire Series V2D Crawl Space Ventilator fan is designed to circulate fresh outdoor air underneath homesand 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 alsocause plumbing failures due to rust and corrosion. Constant operation helps vent radon gases,