![Master Flow FVRABL Automatic Foundation Vent, 16 in W, 8 in H, 57 sq-in Net Free Ventilating Area, Polyethylene [SKU: ORG0359455]](https://cdn11.bigcommerce.com/s-iqof5nfcfj/images/stencil/600x600/products/14945/15006/0359455__58361.1691778383.jpg?c=1 "Master Flow FVRABL Automatic Foundation Vent, 16 in W, 8 in H, 57 sq-in Net Free Ventilating Area, Polyethylene [SKU: ORG0359455]")
![Master Flow FVRABL Automatic Foundation Vent, 16 in W, 8 in H, 57 sq-in Net Free Ventilating Area, Polyethylene [SKU: ORG0359455]](https://cdn11.bigcommerce.com/s-iqof5nfcfj/images/stencil/1280x1280/products/14945/15006/0359455__58361.1691778383.jpg?c=1 "Master Flow FVRABL Automatic Foundation Vent, 16 in W, 8 in H, 57 sq-in Net Free Ventilating Area, Polyethylene [SKU: ORG0359455]")
Product Overview
Automatically opens at 70 deg F and closes at 40 deg F, Quick snap-in installation, Helps prevent foundation decay and lowers risk of frozen pipes, Replaces manual vent, For removing moisture in the foundation area of the home. [QTY/UOM: 1EA / 1EA]
![Master Flow PFV1 Powered Foundation Vent, 16 in W, 8 in H, 57 sq-in Net Free Ventilating Area, Polyethylene, Black [SKU: ORG0832378]](https://cdn11.bigcommerce.com/s-iqof5nfcfj/images/stencil/500x659/products/69283/67682/0832378__50772.1692629522.jpg?c=1 "Master Flow PFV1 Powered Foundation Vent, 16 in W, 8 in H, 57 sq-in Net Free Ventilating Area, Polyethylene, Black [SKU: ORG0832378]")
![Master Flow LW1L Foundation Vent, 16 in W, 8 in H, 50 sq-in Net Free Ventilating Area, Aluminum [SKU: ORG8366999]](https://cdn11.bigcommerce.com/s-iqof5nfcfj/images/stencil/500x659/products/30193/29925/8366999__26201.1691783578.jpg?c=1 "Master Flow LW1L Foundation Vent, 16 in W, 8 in H, 50 sq-in Net Free Ventilating Area, Aluminum [SKU: ORG8366999]")
![Master Flow 500 Foundation Vent, 28 sq-in Net Free Ventilating Area, Aluminum [SKU: ORG8367658]](https://cdn11.bigcommerce.com/s-iqof5nfcfj/images/stencil/500x659/products/68991/67391/8367658__84623.1692629445.jpg?c=1 "Master Flow 500 Foundation Vent, 28 sq-in Net Free Ventilating Area, Aluminum [SKU: ORG8367658]")
![Master Flow LW1 Foundation Vent, 50 sq-in Net Free Ventilating Area, Aluminum [SKU: ORG8366957]](https://cdn11.bigcommerce.com/s-iqof5nfcfj/images/stencil/500x659/products/30192/29924/8366957__31011.1691783577.jpg?c=1 "Master Flow LW1 Foundation Vent, 50 sq-in Net Free Ventilating Area, Aluminum [SKU: ORG8366957]")
![Master Flow BVSII Foundation Vent, 15-3/8 in W, 8 in H, 73 sq-in Net Free Ventilating Area, Aluminum [SKU: ORG6161400]](https://cdn11.bigcommerce.com/s-iqof5nfcfj/images/stencil/500x659/products/13069/13149/6161400__69482.1691777682.jpg?c=1 "Master Flow BVSII Foundation Vent, 15-3/8 in W, 8 in H, 73 sq-in Net Free Ventilating Area, Aluminum [SKU: ORG6161400]")