16 in. x 8 in. Automatic Open/Close Foundation Vent in Black Vinyl Garage Mat A: The black oxide finish

A: The black oxide finish provides excellent corrosion resistance

Retains moisture and nutrients

Forward and reverse

Infinite Possibilities

16 in. x 8 in. Automatic Open/Close Foundation Vent in Black Vinyl Garage Mat A: The black oxide finishThe GAF Master Flow 16 in. x 8 in. Resin Automatic Foundation Vent in Black helps to reduce moisture and helps prevent decay in your foundation with a net free vent area of 57 sq. in. The vanes are factory set to automatically open fully at 70F and close fully at 40F. The UV resistant resin constructed unit easily slips into place and is held in place by tightening the 4 screws in the face of the unit. Black resin construction Automatically opens and