Hello. I'm new to posting here but have been using this site for information since I started my home build a year ago. So I have a question with my shower drain setup under slab. I have attached the pic of what I think will work but not sure if this an s trap or not. I want peace of mind and to get others opinions before I glue it and cover it up for years. It goes from this to a 90 below then into the 4" main.
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