Mechanical · M-QA4J4

Duct Connection to Louver

Materials

Elements

Walls Doors Waterproofing / Flashing Insulation Drainage Connections / Plates

About this detail

A mechanical duct connects to an exterior wall louver, incorporating support angles at the top and sides, insulation, and an access door. A sill flashing with a two-inch turn-up, end dams, and drip is installed with one-quarter-inch thick non-continuous plastic shims to allow moisture weep. Stainless steel self-tapping screws secure the duct at twelve inches maximum on center, maintaining the required minimum one-inch screw connection clearance. Continuous air and water-tight caulking is provided by the general contractor, with final water sealing details coordinated through architectural drawings.

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