Overall Size: 5-13/16" Length X 13-13/16" Width X 1-7/16" DeepWall Opening Size: 4" Length X 12" WidthMaterial: Stamped SteelFinish: Painted WhiteAdjustable Louvered Register Designed For More Precise Air-Flow Control From Ducts1/2" Grille Bar Spacing2-Way Air-Flow Pattern, Surface Louvers Are Stationary While Inside Louvers May Be Closed And OpenedPre-Drilled Mounting Holes For Easy InstallationComes With Screws