This weekend I am going to tackle making a rat rack. I have looked and looked and all the ones I have seen are to tall for my space. I have a wall of 32" and a height of 52". Depth is not a problem. I would rather keep 2-3 rats in each bin, something in between a birthing rack and a "normal" rack. I am not sure if bigger tubs and more rats per bin, or smaller bins with fewer rats and more tubs. I would LOVE to find a tub that is 15" wide and 27" or so long. Would that hold 2-3rats and 2 litters? Thanks so much for the help.