4" 3 Hour Vertical Mount Fire Door 2661-60X48 Residential Registers & Grilles AA-HVL Series Engineering/Performance Data

AA-HVL Series Engineering/Performance Data

Standard Features * Fixed blade return air T-Bar lay-in filter grille * Square collar for 20 1/2" x 20 1/2" duct * Hinged removable face * 20" x 20" x 1" filter (not included) * Seismic support holes * Soft White Options * 920 TFG - steel outer frame * 920 2 TFG - 2" filter spacing (filter not included) * No Labor Collar - square to round (2x2 only) * 1x2 (20x8 filter) or 2x4 (20x44 filter) * Satin Anodized Finish available on this product

Lever operated steel multi-shutter damper

14" and 16" * Soft White Options * Field installable Bowtie Damper (BD) * FTD - Fixed T-Bar Diffuser (6"

Back blades are parallel to the longest dimension

4" 3 Hour Vertical Mount Fire Door 2661-60X48 Residential Registers & Grilles AA-HVL Series Engineering/Performance Datah3. Standard Features * 2661 Square or rectangular fire door for vertical mount only. Maximum dimension 60x60. For damper free area chart A click here * 2663 Out of Airstream fire door. Square or rectangular for vertical mount only. Maximum dimension 60w x 52h. For damper free area chart B click here * 2665 Round fire door for vertical mount only. Available 4" thru 52" round. * 3 hour rated * UL and California State Fire Marshall approved * 4 1 4"