Pressure Relief Vertical Mount 3510-18X20 past 12 months Spring actuated curtain-type fire damper

Spring actuated curtain-type fire damper with 2 1/4" round connection for horizontal or vertical mount

* 2650 - Round spring actuated (6) damper for vertical or horizontal mount

Perforated Face Grille

Single deflection transition box mount spiral pipe grille

* UL and California State Fire Marshall approved * 2" thinline frame * 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 Vertical Mount 3510-18X20 past 12 months Spring actuated curtain-type fire damperh3. 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