here's one i built in '04. it's 8' x 2' x 18'' high. i used to breed unicolors in here but it's now used for bullsnakes. it's screened on 3 sides w/ 1/4'' hardware mesh & has a 4'' aluminum curb giving it a sunken look to keep waste matter in. made of 1 x 3's w/ a stryofoam bottom it's very light but very strong. it took me about 2 days & $100 to complete & was well worth the effort....