Parallel Blade Volume Damper 3000P-70X20 Accessories 904 - Double Deflection Adjustable

904 - Double Deflection Adjustable Aluminum Blade Grille For a 30" x 30" Duct Opening (front blades parallel to shortest dimension)

½ × ½ × ½ Aluminum lattice

700 CB20C - corner

3 or 4 way patterns * Spring push release for easy access to adjust pattern controllers * Round No Labor Collar sizes: 6-10"

Parallel Blade Volume Damper 3000P-70X20 Accessories 904 - Double Deflection Adjustableh3. Standard Features * 16 gauge galvanized channel frame * Parallel blades are cee 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. Options * 3000 PLL Low Leak Air Control