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425 Series Engineering/Performance Data
Install with louvers in up or down position for best duct concealment
Double deflection radius mount spiral pipe grille with adjustable blades
Submittal and Performance Data
Aluminum Airfoil Blade Grille - Vertical Fixed Blade 908-20X10 Step Down Ceiling Diffuser 425 Series Engineering/Performance DataStandard Features * Extruded . 055 T6 aluminum surface mount return air grille * 0 fixed blades parallel to shortest dimension * Countersunk mounting holes for flush appearance with color matching Phillips posi drive screws * Soft White Options * 908 O recessed screwdriver operated opposed blade damper * No Labor Collar (square sizes only) * 900 T T Bar mount * 905 HD reinforced construction * 905 IS insect screen * 1335 1338 Series stainless steel
