4" 3 Hour Vertical Mount Fire Door 2661-60X44 Smoke-Fire Damper Allows for 4-way airflow

Allows for 4-way airflow

904 - Double Deflection Adjustable Aluminum Blade Grille For a 34" x 18" Duct Opening (front blades parallel to shortest dimension)

850 Series Submittal

round collar only) * 830 OR - factory installed opposed radial damper (sizes 6"-14") * 830 FR - U

REVIT FILES T-Bar Modular Core Diffuser with Round Collar 16

4" 3 Hour Vertical Mount Fire Door 2661-60X44 Smoke-Fire Damper Allows for 4-way airflowh3. Standard Features * 2661 Square or rectangular fire door for vertical mount only. Maximum dimension 60x60. For damper free area chart A click here * 2663 Out of Airstream fire door. Square or rectangular for vertical mount only. Maximum dimension 60w x 52h. For damper free area chart B click here * 2665 Round fire door for vertical mount only. Available 4" thru 52" round. * 3 hour rated * UL and California State Fire Marshall approved * 4 1 4"