My Miramar may be different, but the vent pipe was actally inside the outer pipe you show in the picture. The sealant between the 2 pipes was missing allowing odors to sometimes get into the cavity in the wall. Thor customer service is who pointed this out to me.
Quote:
Originally Posted by Bob Denman
The sealant is just to keep water from getting in and under the top plate that goes around the vent.
Any gaps that are underneath that plate: shouldn't matter.
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