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listed Fire-Resistance Diffuser * 700 Series - T-Bar Lay-in Panel * TVB - Thermal Vapor Blanket * Square collar
T-Bar Fixed Core Step Down Diffuser
inner dimension and outer dimension sizes available * Tamper proof screws * Standard Color
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
Standard Features * 2533 - Square or rectangular for vertical mount only
Pressure Relief Horizontal Air Up 3520-20X12 Smoke-Fire Damper listed Fire-Resistance Diffuser * 700h3. 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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