Fixed Bar Blade Filter Grille 935FG-20X20 Finish:Blue Nylon bushings on adjustable blades

Nylon bushings on adjustable blades to prevent metal on metal rattle

linkage and handle enclosed in valve to assure trouble-free operation * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Steel multi-shutter damper * Soft White Options * 200 O - steel lever operated opposed blade damper * Tamper proof screws * Standard Color

Round ceiling radiation butterfly damper

1/2" spacing dual angular louvers

One piece steel frame

Fixed Bar Blade Filter Grille 935FG-20X20 Finish:Blue Nylon bushings on adjustable bladesStandard Features * 45 degree fixed blades parallel to the longest dimension * Hand operated lever for easy filter access * Holds up to 2" thick standard filter (not included) * Removable face for easy cleaning and maintenance * Filter door hinges parallel to longest side * 4 way reversible door on square sizes * 2 way reversible door on rectangular sizes * Filter retention tabs * Concealed mounting holes * Soft White Options * SP935FG 4 holds 4" deep