The GAF 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.
- Die-cast aluminum with lintel
- Used as block replacement
- 50 sq. in. net free vent area
- Damper adjusted manually
- Screen included















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