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Multi-Shutter Damper standard on 6" widths and larger
904 - Double Deflection Adjustable Aluminum Blade Grille For a 40" x 18" Duct Opening (front blades parallel to shortest dimension)
Individually welded 14 guage diffusion bars
Standard Features * Cones are one-piece stamped construction providing a clean
Aluminum Airfoil Blade Single Deflection Diffuser 901-48X20 T-Bar Multi-Shutter Damper standard on 6"Standard 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
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