I've looked at shelving systems from Lowe's, Home Depot, etc. to use for my over-sized sterlite tubs. Somewhere here is a thread about it though I can't locate it at the moment. If I remember correctly it was suggested if your going to get a regular free standing storage shelving that you make sure it's metal framed with particleboard shelving not wire mesh or solid metal shelves. Then cover the particleboard completely with heavy duty aluminium foil (shiney side showing) to protect it and so it doesn't absorb your heat and waste it.

It isn't going to work as well as a snake rack but I'll be using this until we can get racks custom built as nothing I can find holds my 39" long tubs.

~~Jo~~