Adjustable aluminum airfoil blades with lever operated steel multi-shutter damper  Designed for ceiling or sidewall applications  Vertical air deflectors with nylon bushings for easy adjustment and quiet settings  Countersunk mounting holes for flush appearance with color matching Phillips posidrive screws  All component parts, rivets, linkage and handle are enclosed in the valve to ensure trouble free operation  Frames dependent on product size, refer to chart below  Soft White