Price Holyoake Transfer and Door Grille - DG-52-BFL

Offers maximum free area, and is completely sight proof. Also widely used as exhaust and return air grilles where concealment of inside of duct from all angles, is desirable. Constructed of inverted chevron shaped blades tightly held by special spacers in guide slots in the surround. Available in channel (flangeless) surround, or flanged flame, with or without matching back flange.