Toilet drain pipe size
Posted by Deron Linken on January 09, 19101 at 19:39:40:
I'm replacing the drain line to several toilets from the main which is 4". Is it better to go with 3" or 4" drain pipe from the main to the toilet flange? Is 3" better for low flow toilets? Will there be future problems with 4" pipe and low flow toilets?

Thanks for response!

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