My enclosures measure 2 ft. x 4 ft. x 1 ft. tall. Front loading. I made one of the two of them from oak plywood and covered the inside with plastic laminate. It's been a super good cage. I put a radiant heater on the ceiling at one end and a fluorescent light at the other end. I keep a big male blood in it (about 6 ft. and 20 lbs.) and he seems happy as can be in there. Would make the same cage again if I was adding a new blood to my collection.