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Round ceiling radiation butterfly damper
to 23 29/32"
904 - Double Deflection Adjustable Aluminum Blade Grille For a 20" x 14" Duct Opening (front blades parallel to shortest dimension)
Holds up to a 1" filter (not included) with filter retention tabs (FG1)
2x4 T-Bar (20" x 44" duct)
Steel Blade Single Deflection Diffuser 931-24X14 past 12 months Round ceiling radiation butterfly damperStandard Features *Surface mount diffuser * Nylon bushings for easy adjustment and quiet setting of steel blades * Countersunk mounting holes for flush appearance with color matching Phillips posi drive screws * Single deflection diffuser with adjustable steel blades * Steel blades are parallel to longest dimension * Allows 2 way air deflection on one plane * Soft White Options * 931 O with recessed screwdriver operated opposed blade damper * 1331 and
