This rack has tubs for 24 babies. It’s is better for larger snake babies like ball pythons as there is a little air gap in the shelves. It would not be suitable for the smaller, escape artist snakes like corn snakes. It fits visión tubs. So you can do three to a row of the size I’ve included 24 of, two to a row of a little larger ones and one per row of their bigger tubs. The larger tubs are not included but can be purchased from vision. It is about 33 inches tall by 21 inches deep by 15.5 wide. Has heat tape installed and made of fire resistant pvc sheets. Does not include a thermostat, but will need one to run properly.