Quote Originally Posted by blueapplepaste
I've built it both ways. I built the first couple so that they slid out width ways; this was mainly so that I could interchange tub sizes (i.e. use two 12 qt on a shelf or swap it out for a single 28 qt). This gave me a lot of flexibility to swap it out as was necessary depending on what I was housing. However, that did take up a lot of wall space so I've built several that slide in long ways to replace the width ones. These are fine because all of the residents in there are adults and are permenant.

Doing it width ways I was able to get a good gradient using 3" heat tape along the back. And I've never noticed any bowing from pulling on them too much, but perhaps over the course fo several years it could happen.

I think there are pros and cons to both. Currently I have 2 long and two width ones, and as a set up it works perfect for my needs.
Tim and I were referring to CB70 tubs which are almost 3 foot long and narrow...but I could see where the smaller tubs would eliminate the issues Tim and I described.

Glad you posted so we know the different options based on tub size.