Pay in 4 interest-free payments of $41.76 Learn more
Ships within 48 hours · Estimated delivery Nov 4 - Nov 9
remove the two center cones as a unit and reposition the six screws
Blades spaced at 2/3"
Performance Data - No Damper
Options * Sleeve variations * Mounting flange * Adjustable counter balance to adjust various opening pressures
165° replaceable fusible link (#50)
Pressure Relief Horizontal Air Up 3520-18X20 past 12 months remove the two center conesh3. Standard Features * 3510 Vertical mount * 3520 Horizontal mount air up * 3530 Horizontal mount air down * Designed to open with negative or positive pressures for intake or exhaust air * Felt edge blades to hold noise to a minimum * Aluminum construction * Blade to blade linkage * 1 4" pivot pins in nylon busings * Maximum size 24 x 24 * Mill finish h3. Options * Sleeve variations * Mounting flange * Adjustable counter balance to adjust various
US$ 14.99
US$ 24.99
US$ 27.99
US$ 24.99
US$ 86.50
US$ 39.98
US$ 20.30
US$ 17.99
US$ 11.99
US$ 123.50
US$ 19.00
US$ 10.00
US$ 75.00
US$ 15.00
US$ 18.99
US$ 33.99
US$ 15.00
