Master Flow Grill Style 16 in. x 8 in. Aluminum Foundation Vent with Lintel

The Master Flow LW1L grill style foundation vent with lintel allows air circulation to reduce moisture and helps prevent decay in your foundation with a net free vent area of 50 sq. in. The lintel allows the vent to be uses as a block replacement. The LW1L is die-cast aluminum with screen and a damper. The damper adjusts manually.