Tank in wall carrier in exterior 2x4 wall - bad idea?

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Mnoone

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I am interested in installing a tank in wall toilet in our house. It would be on an exterior wall which uses 2x4 framing and does not have sheathing - instead it just has board and batt siding. The floor joists underneath run parallel to the exterior wall.

How bad of an idea is this? Things I'm concerned about:
1. nails popping in from the siding damaging tank. Even just somebody doing a repair and using too long of a nail. I wonder if I could put a steel plate behind the tank to protect it?
2. A large hole has to be drilled for the waste through the bottom plate which will likely structurally compromise that 2x4?
3. Likely a notch will have to be taken out of the floor joist as I suspect it is directly underneath the wall.

What do you think? Anybody done this before?
 

breplum

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I will only work on and install the 2 x 6 product. 4" wall is a crappy setup with no working room for human hands.
 
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