Opposed Blade Volume Damper 3000-0BD-24X22 Specialty Products 2" ADC compliant round collar

2" ADC compliant round collar with bead for ease of installation

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Standard Features * For large volume air delivery * For evaporative coolers or central blower systems * Adjustable directional dampers with shut-off * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Soft White

904 - Double Deflection Adjustable Aluminum Blade Grille For a 20" x 10" Duct Opening (front blades parallel to shortest dimension)

Standard Features * 3-way diffusion for draft-free heat or air conditioning * For ceiling or sidewall applications * All component parts

Opposed Blade Volume Damper 3000-0BD-24X22 Specialty Products 2" ADC compliant round collarh3. Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non metallic celcon bushings * 1 2" square zinc plated steel pivot pins * 1 2" square zinc plated steel adjustable operating shaft extending up to 4" beyond the air control frame * Single blades on dampers with a height of 12" or less * Mill finish h3.