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Ideal for supply air in the toe space areas between kitchen cabinets
Recommended Minimum Sleeve Thickness for Fire Dampers
with 53% free area
Countersunk mounting holes for flush appearance
103 P - three way
Pressure Relief Horizontal Air Up 3520-12X12 T-Bar Ideal for supply air inh3. 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
