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AA-HVL Series Submittal
remove the two center cones as a unit and reposition the six screws
Ceiling opening must be 4” larger in length and width than the nominal duct size
available 4" through 40" round (2549)
CB Series W/Damper R
4" Round Horizontal/Vertical Fire Damper 2650-9 Specialty Products AA-HVL Series Submittalh3. Standard Features * 2649 Round damper for vertical mount only. Available 4" thru 52" round. * 2650 Round spring actuated (6) damper for vertical or horizontal mount. Available 4" thru 52" round. * UL and California State Fire Marshall approved * 4 1 4" standard frame style * 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
