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toilet should have a vent with in three feet of down pipe, but as long as you are with in the drop range for hori. pipe run you can go as far as you want, but you need that air vent close as you can so that the suction from the toilet water does not pull the rest of water from toilet base(p trap).

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โˆ™ 2006-04-04 18:39:08
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Q: How far can a toilet be from the main vent stack?
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