Pay in 4 interest-free payments of $38.88 Learn more
Ships within 48 hours · Estimated delivery Aug 18 - Aug 23
Standard Features 1” rim size (2” larger than nominal duct size / order size) 14 gauge steel construction Countersunk mounting holes for a flush appearance 1-27/32” Wide x 11/32” High slots on staggered centers
Opposed Blade Damper standard on 4" widths
back blades parallel to longest dimension
52h * Interlocking steel roll-formed blade (3) with roll-formed frames (1) * Blade lock (5) * Damper manufactured from corrosion tested galvanized mild steel (G-90) * Self locking corner (4) * 165° replaceable fusible link (2) h3
Pressure Relief HD 3530-18X18 past 12 months Standard Features 1” rim sizeh3. Standard Features * 3510 Vertical mount * 3520 Horizontal mount air up * 3530 Horizontal mount air down * Designed to open with negative or positive pressures for intake or exhaust air * Felt edge blades to hold noise to a minimum * Aluminum construction * Blade to blade linkage * 1 4" pivot pins in nylon busings * Maximum size 24 x 24 * Mill finish h3. Options * Sleeve variations * Mounting flange * Adjustable counter balance to adjust various
US$ 165.00
US$ 12.00
US$ 125.00
US$ 139.50
US$ 150.00
US$ 217.50
