Master Flow 50 in. NFA Mill Aluminum Square-Top Static Roof Vent (Carton of 10)

The Master Flow Aluminum Square-Top Utility Vent is designed for attic ventilation. The fully enclosed hood deters rodent and insect infiltration and leaf and pine needle clogging. Recommended for kitchen duct outlets, bathroom fan exhausts, as well as attic ventilation. Each vent offers a full 50 sq. in. of net free ventilating area (NFA).