i don't think u can go wrong with either Boaphile or AP. i have their racks. on the PVC cage, i have a 36x24x14 by Scaled Enclosures (from fellow forumer AKA Dave). he has them in various sizes and in both swing down and sliding doors. i just have one, but his system is modular and stackable between the different sizes. maybe he'll pop in and post a pix of his full setup. it's a wall of of PVC enclosures.