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165° replaceable fusible link
Ceiling opening must be 4” larger in length and width than the nominal duct size
120x120 multiple
Options 14 GA 304 SS Construction
Pressure Relief Vertical Mount 3510-16X24 Residential Registers & Grilles 165° replaceable fusible linkh3. 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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