Factory Drain Size

To put the drains in the very corner, there is no straight through path due to the wall slope of the pan. But yeah kind of odd considering ease of other options.

If you keep the drains in the OEM location, then the most direct path is to use some 1/2" CPVC 45. They are an almost perfect fit for offsetting the hole to keep the drain within the legs.

Has anyone measured up the factory drain size and location for the 5th drain on the factory assemble MR-1?
Before I pour concrete, I’d like to make one. LS won’t sell one yet because they’re backlogged and they don’t have an STL from which I can make one.
If anyone can measure up the sizes and location (distance from back lip), I can make one myself.

Thanks,
Steve

you are over thinking it, buy a floor drain from amazon and install it behind the plate.

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Thanks! I’ll take a look.