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  1. #1
    Join Date
    Oct 2007

    Cool bath exhaust fan through joists

    i need to run a 4 inch bath exhaust line through 3 2X8 joists. i asuume since i am cutting most of the joist out i need to support it but how??? thanks guys and girls!

  2. #2
    Join Date
    Jun 2007
    East Georgia

    Default Re: bath exhaust fan through joists

    My solution would be to add some 3/4 inch plywood to each side of the proposed hole and bolt it in. Make sure the hole you cut is as close to center as possible. The object is to replace as much of the material you remove as possible.

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