<a href=showthread.php?s=&postid=15181835#post15181835 target=_blank>Originally posted</a> by bennyd I need to know how far down my bulkheads need to be for my beans pipes.
It doesn't really matter, as long as you are a safe distance away from each edge. I like drilling the holes first, then getting everything plumbed up, and constructing my overflow box last... that way you can custom fit it to your plumbing... rather than having to worry about squeezing everything into a box you already constructed ahead of time.
I think he has the bottom of the downward 90's about 1/2" off the bottom of the overflow box... then you just need to estimate how much room you need to pull the bulkheads/90's in and out easily... and that will give you your overflow box dimensions.
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