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Ships within 48 hours · Estimated delivery Aug 17 - Aug 22
Product sizes available to fit spiral pipe diameters 8” – 48
Available 4" thru 52" round
* 2650 - Round spring actuated (6) damper for vertical or horizontal mount
Spiral Diffuser Radius Flush Mount Diffuser Single Deflec
Check out the All About Spirals page
Pressure Relief Horizontal Air Up 3520-10X10 Residential Registers & Grilles Product sizes available to fith3. 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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