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    pattyg2's Avatar
    pattyg2 Posts: 480, Reputation: 27
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    #1

    Jun 10, 2008, 02:57 PM
    Running a vent to bathroom from central ac/heat
    I want to run a 4" vent to my bathroom from the central ac. It is located in the attic and above the bathroom. I just replaced all the ductwork for the whole house. It's probably about less than 4' to the bathroom ceiling. Do I cut into the box and install a 4" collar and run the ductwork or use a wye? The ductwork I have is 7".
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
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    #2

    Jun 10, 2008, 03:12 PM
    If you put in a wye, it will probably take away from whichever room the duct was going to,a duct all buy itself is best,, 4 inch is usually good for a bathroom unless its bigger than average
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