3 Hour Out Of Air Fire Door Grille 2563-18X18 Residential Registers & Grilles For evaporative coolers or central

For evaporative coolers or central blower systems

Lever operated steel multi-shutter damper

HVL Series Submittal

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

Fan shaped 1/2" spaced louvers

3 Hour Out Of Air Fire Door Grille 2563-18X18 Residential Registers & Grilles For evaporative coolers or centralh3. 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 *