I dont have a rack system and im not planning on building one for awhile... he was in a 24x12x16 and had no room to move or anything.
He`s already about 39inches in length and has always been an active snake...that`s why I spoiled him with that much of a larger cage..he has 3 hides...1 warm 1 cool and a humid hide..plus a tong of foilage to hide under