2" 3 Hour Vertical Mount Fire Door 2561-36X28 Step Down Ceiling Diffuser * 2502 - Square or

* 2502 - Square or rectangular spring actuated (6) for horizontal or vertical mount

To adjust diffuser

* 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-90) * Self locking corner (4) * 165° replaceable fusible link (2) h3

055 T6 extruded aluminum frame * 90% free area * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Soft White Options * 600 O - opposed blade damper * No Labor Collar - Square to round (square sizes only) * 600 T - T-Bar mount * 1/2" x 1/2" x 1" Lattice or 1" x 1" x 1" Lattice * Fractional sizes

Standard Features * 2501 -Square or rectangular for vertical mount only

2" 3 Hour Vertical Mount Fire Door 2561-36X28 Step Down Ceiling Diffuser * 2502 - Square orh3. 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 *