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Ships within 48 hours · Estimated delivery Nov 10 - Nov 15
Standard Features * 2533 - Square or rectangular for vertical mount only
945 Series Engineering/Performance Data
* UL and California State Fire Marshall approved * 4-1/4" standard frame style * Maximum dimension 60w
with 75% free area Options 14 GA 304 SS Construction 12 GA (
Square Collar
Pressure Relief Horizontal Air Up 3520-24X20 Smoke-Fire Damper Standard Features * 2533 -h3. 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
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