2" 3 Hour Vertical Mount Fire Door 2561-48X48 Smoke-Fire Damper see 2700 series)

see 2700 series)

Galvanized Finish

SD52 - Transition Box Spiral Pipe Grille (Single Deflection)

3-Way and 4-Way Air Patterns

2" 3 Hour Vertical Mount Fire Door 2561-48X48 Smoke-Fire Damper see 2700 series)h3. 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 *