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Square collar designed for 20” × 20” duct
Building materials rated 2 hours or less
165° replaceable fusible link
5/32” crossbars
904 - Double Deflection Adjustable Aluminum Blade Grille For a 48" x 30" Duct Opening (front blades parallel to shortest dimension)
Pressure Relief HD 3530-24X22 Smoke-Fire Damper Square collar designed for 20”h3. 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$ 38.00
US$ 28.00
![PRE-ORDER Demon Slayer Kimetsu no Yaiba [BUZZmod.] - Shinobu Kocho 1/12 Scale Action Figure Medicos](https://cdn.shopify.com/s/files/1/0553/6169/9999/products/DemonSlayerKimetsunoYaiba_BUZZmod._-ShinobuKocho1.jpg?v=1628126228)
US$ 28.00
US$ 34997.50
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