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Countersunk mounting holes with color matching Philips posi-drive screws
Access door with 1-3/8" deep steel roll formed frame
14" and 16" * Perforated face with concealed hinges * 2x2 galvaneal steel panel with seismic support hangers * Soft White Options * Field installable Bowtie Damper (BD) (sizes 6-14") * 780 OR - factory installed opposed radial damper (sizes 6"-14") * 780 FR - U
1/2” Wide x 1/2” High square holes
Standard Features * Extruded aluminum (
Pressure Relief Horizontal Air Up 3520-18X14 Specialty Products Countersunk mounting holes with colorh3. 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$ 742.50
US$ 264.50
