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2" ADC compliant round collar with a bead for ease of installation
For evaporative cooling or high-velocity exhaust applications
Standard Features * Single plaque ceiling diffuser * 360 air diffusion * Hinged-down core for easy duct access * No Labor Collar * Seismic support hangers * Available sizes: 6"-10"
Zinc plated steel closure spring
Steel Blade Single Deflection Diffuser 931-18X20 Finish:Designer Color - Velvet Black 2" ADC compliant round collarStandard 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
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