3 Hour Out Of Air Fire Door Grille 2663-24X20 Step Down Ceiling Diffuser 14" and 16" * Soft

14" and 16" * Soft White Options * Field installable Bowtie Damper (BD) (sizes 6-14"

AA-HVL Series Engineering/Performance Data

Standard Features * Galvaneal steel face designed for high air volume delivery * 360 air diffusion * No Labor Collar * Seismic support hangers * Available sizes: 6"

Allows for 2-way airflow

3 Hour Out Of Air Fire Door Grille 2663-24X20 Step Down Ceiling Diffuser 14" and 16" * Softh3. 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"