3 Hour Out Of Air Fire Door Grille 2563-18X18 Residential Registers & Grilles Standard Features * 1 1/2

Standard Features * 1 1/2 hour rated fire damper * 2549 - Round damper for vertical mount only

HVL Series Submittal

Lever operated Multi-Shutter Damper

For evaporative coolers or central blower systems

linkage and handle enclosed in valve to assure trouble-free operation * Soft White Options * 955 O - steel opposed blade damper * Tamper proof screws * Standard Color or Designer Color Finish available on this product

3 Hour Out Of Air Fire Door Grille 2563-18X18 Residential Registers & Grilles Standard Features * 1 1/2h3. 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 *