Aluminum Airfoil Blade Single Deflection Diffuser 901-48X48 Finish:Bronze UL listed and tested in

UL listed and tested in accordance with UL Standard 555C

Heavy duty steel honeycomb construction

AA-HVL Series Engineering/Performance Data

904 - Double Deflection Adjustable Aluminum Blade Grille For a 20" x 8" Duct Opening  (front blades parallel to shortest dimension)

904 - Double Deflection Adjustable Aluminum Blade Grille For a 20" x 14" Duct Opening (front blades parallel to shortest dimension)

Aluminum Airfoil Blade Single Deflection Diffuser 901-48X48 Finish:Bronze UL listed and tested inStandard Features * Extruded aluminum (. 055 T6) surface mount diffuser * Nylon bushings for easy adjustment and quiet setting of airfoil blades * Countersunk mounting holes for flush appearance with color matching Phillips posi drive screws * Single deflection diffuser with adjustable airfoil blades * Airfoil blades are parallel to longest dimension * Allows 2 way air deflection on one plane * Soft White Options * 901 O with recessed screwdriver