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and 2x4 panels * Soft White
4-way flush step down steel diffuser
RD Series Engineering/Performance Data
904 - Double Deflection Adjustable Aluminum Blade Grille For a 48" x 30" Duct Opening (front blades parallel to shortest dimension)
HVL Series Engineering/Performance Data
Aluminum Airfoil Blade Grille - Horizontal Fixed Blade 907-5X34 Damper:Opposed Damper and 2x4 panels * SoftStandard Features * Extruded . 055 T6 aluminum surface mount return air grille * 0 fixed blades parallel to longest dimension * Countersunk mounting holes for flush appearance with color matching Phillips posi drive screws * Soft White Options * 907 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
