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Ships within 48 hours · Estimated delivery Nov 15 - Nov 20
1" and 1 1/2"
Uniform 360 degree discharge pattern
see 1560 Series * Tamper proof screws * Standard Color
* Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Driftwood Tan Options * TD Series - with damper
Adjustable steel curved blades
Pressure Relief Vertical Mount 3510-14X18 past 12 months 1" and 1 1/2"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
