I was just checking out some pre-made rack systems, that come with heat preinstalled and I ran across the company Boaphile Plastics, this is how one of there adds for a rack system reads:

"Our best seller the "Blanket" Box rack makes ideal caging for Leopard Geckos and Ball Pythons. This also makes great economical housing for most Colubrids as well as Boas and Pythons up to about 4 1/2' - 5'."

Than they give the dimensions:

"Each Blanket Box Rack is 36 3/16 " tall, 24 5/8" deep front to back and 17" wide. We have built it as large as possible and still stay within the limits to FedEx this valuable piece of equipment to your door. The #2221 Rubbermaid tub used in this rack is 22 1/4" x 16 1/4" x 5 3/4" tall."

How can they tote a rack system with those tiny dimensions as suitable for boas and pythons up to 5 feet long?