I have got 6, 6ft x 2ft x 2ft vivariums for sale with electrics. These vivariums have been built so they can be placed as one stack system so there is 3 vivariums on top of eachother and 3 at each side, making a stack system of 12ft x 6ft x 2ft. Or they can be split making 2 stack systems each would be 6ft x 2ft x 2ft or can be placed as individuals as 6ft x 2ft x 2ft making 6 vivs in totals. Or with dividers would make a total of 12 3ft x 2ft x 2ft vivariums. This is in excellent condition at a bargain price of offers around £700 or if necessery £150 each. but looking at the pics it would be a shame to split.