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Ships within 48 hours · Estimated delivery Aug 11 - Aug 16
with 75% free area Options 14 GA 304 SS Construction 12 GA (
inner dimension and outside dimension available * Available in continuous lengths with butt joints * Tamper proof screws * Standard Color
Square Collar
Extruded aluminum frame with signature line marks
Allows for 4-way airflow adjustment
Pressure Relief Horizontal Air Up 3520-24X20 Smoke-Fire Damper with 75% free area Optionsh3. 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
US$ 126.72
US$ 47.08
US$ 120.96
US$ 130.81
