Master Flow 50 sq. in. NFA Brown Aluminum Square-Top Round Throat Roof Louver Static Vent (Carton of 12)

The GAF Master Flow Aluminum Square-Top Round Throat Roof Louver Vent is our most versatile utility vent. It is recommended for kitchen duct outlets and bathroom fan exhausts, as well as attic ventilation. It has a full 50 sq. in. of net free ventilating area (NFA) per vent.Aluminum constructionBrown finish50 sq. in. net free ventilating areaAvailable in 4 colors to complement most roofs (mill, black, brown and weatherwood)Long-lasting aluminum constructionMinimum roof pitch required is 3:12