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Front blades are parallel to the shortest dimension
Access door with 1-3/8" deep steel roll formed frame
11/32” Wide x 1-27/32” High slots
3/4" round collar
904 - Double Deflection Adjustable Aluminum Blade Grille For a 48" x 8" Duct Opening (front blades parallel to shortest dimension)
Pressure Relief Vertical Mount 3510-18X24 Smoke-Fire Damper Front blades are parallel toh3. 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$ 42500.00
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