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

The Master Flow LW1 grill style foundation vent allows air circulation to reduce moisture and helps prevent decay in your foundation with a net free vent area of 50 sq. in. The vent is installed by nailing to floor joists or use as a block replacement. The LW1 is die-cast aluminum with screen and a damper. The damper adjusts manually.