2" Round Vertical Mount Fire Damper 2549-40 Residential Registers & Grilles 904 - Double Deflection Adjustable

904 - Double Deflection Adjustable Aluminum Blade Grille for a 16" x 8" Duct Opening   (front blades parallel to shortest dimension)

14 gauge steel construction

2" ADC compliant round collar with bead for ease of installation (square sizes only)

Standard Features * Aluminum construction deep housing and inner concentric rings * Designed for high volume long throw applications * Adjustable air direction * Easily installed with use of strong spring clips * No screwholes offers clean appearance for wall mount * Anodized finish Options * 1204 - turbo nozzle in panel mount

Holds up to 1" filter

2" Round Vertical Mount Fire Damper 2549-40 Residential Registers & Grilles 904 - Double Deflection Adjustableh3. Standard Features * 1 1 2 hour rated fire damper * 2549 Round damper for vertical mount only. Available 4" thru 40" round. * 2550 Round Spring actuated (6) damper for vertical or horizontal mount. Available 4" thru 28" round. * 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