Mechanical · M-XQ7PX

Vertical Fire Damper Installation Detail

Materials

Elements

Walls Doors Connections / Plates Roof / Floor Openings

About this detail

A vertical fire damper is centered within a UL rated wall assembly opening, housed inside a factory sleeve with a minimum one-quarter inch clearance on all sides between the sleeve and wall opening. Minimum one-and-one-half-inch retaining angles are positioned on all four sides at each side of the wall, overlapping the structural opening one inch minimum and covering the corners. The retaining angles are secured to the sleeve using number ten sheet metal screws at eight inches on center with a minimum of two connections per side, left unfastened to the wall. Breakaway duct connections are utilized at the sleeve ends, and a factory access door is provided in the sleeve.

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