Side Wall and Ceiling Registers are available with two or three-way deflection. Metal lever handle for adjustable air deflection. These air registers have a multi-louver damper. Series 356 & 357 Diffusers are made from all steel with a white finish. Features 1/3 grille bars with 3 grille bars to an inch. Air is directed left and right at a fixed 22 degree angle. Full range multiple valves adjust 45 degrees vertically for open and closed positions. 382 & 383 Diffusers are made from stamped steel with a white finish. These HVAC registers have a turnback frame and 1/2" grille bars. Grille bars are spaced 2 grille bars to an inch. Turnback frame features notched corners that are turned 90° for a rigid and improved fit against the wall.