Fantech's Metal Supply Grille. White Powder Coat Finish. a Low Profile, Adjustable, Circular Supply Grille. Included with Grille is a Matching Diameter Galvanized Mounting Collar with Nailing Strip. Fantech MGS 4 Adjustable Metal Supply Grille with Metal Mounting Collar Duct: 4" Width: 0.375" Duct Connections: 3.875" Height: 3.750" CFM High: 100
