2" 3 Hour Vertical Mount Fire Door 2561-36X24 Accessories Step down core designed for

Step down core designed for 4-way uniform air distribution

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

Access door with 1-3/8" deep steel roll formed frame

For evaporative coolers or central blower systems

2" 3 Hour Vertical Mount Fire Door 2561-36X24 Accessories Step down core designed forh3. 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 *