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Louvers designed with rolled rib for maximum strength and rigidity
Zinc plated steel closure spring
Heavy Duty ConstructionMRI CompatibleInsect Screen
SUBMITTALS 907 Series Submittal
916 Series Submittal
Pressure Relief Horizontal Air Up 3520-14X14 Smoke-Fire Damper Louvers designed with rolled ribh3. 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
