Mechanical · A-4XRT5

Typical Pressure Relief Outside Air Damper Installation

Materials

Metal (misc.)

Elements

Walls Arches Waterproofing / Flashing Anchors / Embeds Reinforcing Roof / Floor Openings

Connections

Welded Connection Rebar Splice / Development

About this detail

An outside air damper is installed through an exterior wall assembly. The aluminum pressure relief damper is mounted within a duct penetrating the wall, with outer angles welded to suit the installation and inner aluminum angles secured using stainless steel self-sealing sheet metal screws for interior accessibility. The exterior side features a one-half-inch by one-half-inch stainless steel woven bird screen. The interior features a hinged grille centered on the duct opening, utilizing a stainless steel piano hinge skip-welded on three sides to the duct flange and four sides to the grille. A quarter-inch gasket is glued to the grille, and the assembly includes a sliding latch assembly and latch dowel assembly for operation from the interior space.

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