2" Round 3 Hour Vertical Fire Door 2565-36 Residential Registers & Grilles Countersunk mounting holes for flush

Countersunk mounting holes for flush appearance

back blades parallel to the shortest dimension Extruded aluminum surface mount frame with signature line marks Provides 4-way air flow on one plane Nylon bushings on adj

11/32” Wide x 1-27/32” High slots

1/2" spacing dual angular louvers for strength and maximum free area

listed Fire-Resistance Diffusers * TVB - Thermal Vapor Blanket * Square collar

2" Round 3 Hour Vertical Fire Door 2565-36 Residential Registers & Grilles Countersunk mounting holes for flushh3. 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 *