Best thing about ikea is everything is sold in pieces and you can also make this piece longer or buy small ones and make bigger!
heres a picture of one
http://blog.ianmeyerphotography.com/...09-02-15_9.jpg
heres one I converted into a trailer to haul cases of pop from the store to my home, it's the perfect size, it may be a tad heavy because it's steel but meh, it's square tubing and with all the parts they sell for this theres parts to connect them so you could alter them to be wider or slimmer. plus Ikea has an as is section where these can be even cheaper lol
Theres also other things there that could make great parts. like the L shaped steel beams from their beds