ok I figured out over the weekend whatit would roughly cost me to build a 3rd rack, that everything from the lumber to the flexwatt. including the tubs to place in it(well the first 6 since i need 12 to make my other 2 racks uniform in tub size). I guessing about 400-500 in cash not counting time and such in the building and assemble of the rack. ( not that I got snakes to place in there or fill my current racks yet) I just planning ahead. some. I was wondering do they make a minium of a 12-14 tub rack that a complete setup that cheaper and fully ready to go(with tubs( lids on them) heat, and such soall I need s to place the water t-stat, aspen and snakes in cheaper? )

I am looking at about a 27 deep by 4 ft wide spot and can be about 5 ft tall? I want something that I won't have to worry about bowing melting ( if get too warm whic would mean dead snake before hand) and would need to last at least 10 years like my wooden racks will.
My current design is set up with 14-16 tubs all are 40 qt sterlite one with the flip lock handles. (grey handle flipover the lid to lock down) I using 11" wide flexwatt for the belly heat , along were the back of the tub will sit. so the snakes can thermal regulate themselves. I design it so it a double tub per shelf rack with anywere from 7-9 shelves possible I so I could gt techinal and have 18 tubs. but I thinking 14 tubs and the top shelf will be my rodent tubs.