Step 5: Attach the Fan to the Joists

Attaching the vent fan
Photo: Keller & Keller Photography
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Fully extend the brackets until they come in contact with the sides of the joists.

Secure each bracket end with a single 1½-inch drywall screw.

Take the flexible duct that comes with the wall cap kit and slip one end over the elbow attached to the vent fan. Secure it with foil duct tape.

Feed the existing or new electrical cable through the connector, then tighten the connector screw to secure the cable.

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    Tools List

    • caulk gun
      Caulking gun with silicone adhesive,
      for adhering wall cap to house siding
    • speed square
      Layout square
    • drill
      Drill-driver with 4½-inch hole saw,
      for cutting duct hole through sidewall
    • spade bit
      Extra-long, 3/8-inch-diameter spade bit,
      for drilling reference hole through ceiling
    • jigsaw
      Jigsaw,
      for cutting hole in bath ceiling
    • 16-foot tape measure
      Tape measure
    • eye goggles
      Goggles
    • extension ladder
      Extension ladder
    • ladder
      Stepladder

    Shopping List

    1. VENT FAN

    2. TARPS

    to protect floor and fixtures from dust



    3. 90-DEGREE SHEEET METAL DUCT ELBOW

    to connect flexible duct to vent fan



    4. 12-INCH CONNECTOR DUCT

    5. CABLE CONNECTOR

    6. WALL-CAP KIT

    7. FOIL DUCT TAPE

    8. DUST MASK