Mechanical · M-85WSE

Fan Powered HEPA Filter Mounting Detail

Materials

Steel

Elements

Ceilings Decks Bracing Insulation Anchors / Embeds Connections / Plates

Connections

Deck Attachment Embed Plate

About this detail

A sixty-pound fan-powered HEPA filter is suspended beneath a metal deck ceiling using four seismic hanger brackets and threaded rods. Three-eighths-inch all-thread rods connect to the overhead deck via one-half-inch diameter Hilti KB-TZ expansion anchors with a two-inch embedment. Four thirty-one-thousandths-inch steel cables provide forty-five-degree lateral bracing, secured to the deck using Hilti X-U shot pins with a minimum one-and-one-quarter-inch embedment into the bottom flute. A flexible fiberglass duct measuring up to seven feet in length connects to the unit using drawbands securing the inner liner, helix, and entire flex duct assembly without exposed insulation. A Unistrut P1000T channel stiffener with P2485 cradle clips spaced at sixteen inches on center supports the flexible duct. Mason SCB2 brackets and Price P50/P51 seismic hangers secure the corners, with twelve-gauge wire providing additional support.

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