In my expierence repairing frozen pipes over the decades, unless you temper the heat around the pipes, they will freeze. Bundled pipes in foam at 10...
C is the vent for the tub, and the pipe extending horizontally is the trap arm before the p-trap is glued on. We always install the trap "after" the...
At a workshop in the Schluter headquarters...finishing up in the morning. Sometime in the future...no indication of when (product is tested, but not...