I want to install the plumbing for a washing machine on a new wall that previously had no plumbing. I would like to use an AAV to vent the drain, and I'm wondering if my schematics will work, or if there are any suggestions. This mudroom is on a concrete slab. On the wall to the left and the wall behind the viewer is crawl space for the rest of the house, which sits about 20" higher than this room. Also, my plan is to install a recessed wall box for the AAV with a removable grill for airflow and access.
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