3 Hour Out Of Air Fire Door Grille 2563-12X12 Accessories Front blades are parallel to

Front blades are parallel to the shortest dimension

Low profile design for tight mechanical areas

Mounting Holes - Designed for ceiling or sidewall application

904 - Double Deflection Adjustable Aluminum Blade Grille For a 30" x 18" Duct Opening (front blades parallel to shortest dimension)

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

3 Hour Out Of Air Fire Door Grille 2563-12X12 Accessories Front blades are parallel toh3. Standard Features * 2561 Square or rectangular fire door for vertical mount only. Maximum dimension 48w, 49h. For damper free area chart A click here * 2563 Out of Airstream fire door. Square or rectangular for vertical mount only. Maximum dimension 48w, 41h. For damper free area chart B click here * 2565 Round fire door for vertical mount only. Available 4" thru 40" round. * UL and California State Fire Marshall approved * 2" thinline frame *