Mechanical · M-7JT5F

Smoke Damper Wall Penetration Detail

Materials

Steel Stainless Steel

Elements

Walls Doors Ceilings Arches Roof / Floor Openings

Connections

Welded Connection Bolted Connection Expansion / Slip Connection

About this detail

A smoke damper installs within a wall penetration inside a sheet metal sleeve matching the wall thickness, using 16 gauge for smaller dampers up to twenty-four by thirty-six inches and 14 gauge for larger sizes. Two-by-one-inch by 14 gauge mounting angles frame each side, attached to the sleeve using quarter-inch diameter machine bolts or half-inch long welds spaced eight inches on center, left unattached to the wall. The smoke damper attaches to the sleeve with half-inch long welds spaced six inches on center for both vertical and horizontal configurations, with horizontal configurations incorporating a stainless steel spring operator alongside a 120-volt electric motor operator and smoke sensor. Ductwork connects to the damper using "S" type slip joints, and access doors are provided in ducts based on duct width with a ceiling access door required in non-accessible ceiling types.

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