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375 Series Submittal
round collar only) * 830 OR - factory installed opposed radial damper (sizes 6"-14") * 830 FR - U
Available in even sizes 6" to 20" and 24"
Options * 3000 PLL - Low Leak Air Control Damper
Double deflection radius mount spiral pipe grille with adjustable blades
Parallel Blade Volume Damper 3000P-56X28 Accessories 375 Series Submittalh3. 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
