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* 2502 - Square or rectangular spring actuated (6) for horizontal or vertical mount
and handle
Access door with 1-3/8" deep steel roll formed frame
Adjustable baffle controllers to direct airflow horizontally or vertically
Pressure Relief Vertical Mount 3510-18X24 Smoke-Fire Damper * 2502 - Square orh3. Standard Features * 3510 Vertical mount * 3520 Horizontal mount air up * 3530 Horizontal mount air down * Designed to open with negative or positive pressures for intake or exhaust air * Felt edge blades to hold noise to a minimum * Aluminum construction * Blade to blade linkage * 1 4" pivot pins in nylon busings * Maximum size 24 x 24 * Mill finish h3. Options * Sleeve variations * Mounting flange * Adjustable counter balance to adjust various
