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Interlocking steel roll-formed blades
Fractional Sizes
Heavy Duty ConstructionMRI CompatibleInsect Screen
3-hour fire resistance rating
850 Series Submittal
Pressure Relief Horizontal Air Up 3520-16X18 Step Down Ceiling Diffuser Interlocking steel roll-formed bladesh3. 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$ 103.00
US$ 186.00
US$ 165.00
