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This type of drain configuration works well in my situation, but I have a 2" shower drain I need to add to this and share the vent.

Where and how can I do that? Wye on the horizontal trap arm? Sanitary tee on the vertical?

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U could t into the 2" vertically as long as your 6" above flood level rim. But I'm not sure where your main vent stack is . U need a full size vent stack going out roof.

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  • Hi! Would you mind editing your post to use full words, please. It gives your answer much more credibility. – FreeMan Nov 27 '20 at 0:52

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