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Adjustable steel curved blades
Countersunk mounting holes with color matching Philips Pozidriv screws
Countersunk mounting holes for flush appearance with color matching Phillips Pozidriv screws
Adjustable steel roll formed blades oriented for 1 or 2 way airflow pattern
Parallel Blade Volume Damper 3000P-20X24 T-Bar Adjustable steel curved bladesh3. 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
