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parallel to longest dimension
Adjustable aluminum airfoil blades oriented for 1 or 2 way airflow pattern
904 - Double Deflection Adjustable Aluminum Blade Grille For a 30" x 18" Duct Opening (front blades parallel to shortest dimension)
425 Series Engineering/Performance Data
Holds up to a 1" filter (not included) with filter retention tabs (FG1)
Adjustable Curved Blade Diffuser CB40-24X24 Damper:without Damper parallel to longest dimensionStandard Features * Adjustable curved blade . 055 T6 extruded aluminum surface mount supply diffuser * Four air patterns: CB10 one way, CB20 two way, CB30 three way, CB40 four way * Countersunk mounting holes for flush appearance with color matching Phillips posi drive screws * Soft White Options * CB40 O recessed screwdriver operated opposed blade damper * Square to round No Labor Collar (square sizes only) * 700 CB and CB T T Bar mount * SCB steel
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