I have an ARS rack forbmy ball pythons and can sincerely say they are the best. ARS racks are constructed with thick gage steel and are indestructible. They are secure and retain humidity when the venting holes are easily covered (ARS covers can be purchased ). Buy with confidence, they are the best! Critics will say they are expensive, but compare any other cage companies and you will find them cheaper than Ap caging, Boaphile racks, and Freedom Breeder. Although Freedom Breeder racks are a good product, the quality of ARS racks are superior in both quality and price.