Manufacturers Direct FVRABL Automatic Foundation Vent, Black

FEATURES

• Hi-density polyethylene construction. Auto-open at 70 degrees Fahrenheit, closes at 40 degrees to lower risk of frozen pipes and save energy. Replaces manual vent. Snap-in installation. 57 sq. in. NFVA. 16'' x 8''.
• FOUNDATION VENTS
• Color=Black
• MASTERFLOW
• AUTOMATIC - POLY , EA