they can chew through the home depot tubs too, but it all depends on the RAT.if you have a chewer like I had they can chew through just about any tub.the rat i had chewed through the morter tub, and then through a sterilte birthing tub!!, needless to say her and her babies are snake food.......
p.s I screwed a piece of mesh screen over the morter tub hole and its o.k now
ok i just built one of these and sold it, the tubs at home depot where 5 each they were 19.5 x 27.? x 6 inches somewhere in that area and it held 1.4 with comfort but i removed the babies asap or usally moved the momma to keep her from being prego back to back