My large grow tent has no skeleton!

Sooooooo I've got a strange situation on my hands here. A recent trip to San Francisco to sell some buds netted me a free grow tent. I packed it in my van assuming everything was there, since the owner hadn't indicated otherwise. I get home and the frame's missing, all I've got is what amounts to a giant bag. I didn't really think much of it since I was just supposed to be borrowing it but I can't get ahold of the owner, and haven't been able to for a couple weeks at this point so....I guess it's mine now. Any ideas on what I should do? I'm not gonna get the support frame that came with it but figuring out it's actual size (5x7 is what she said but that's obviously rough) and making up something with bamboo or some 2x4's shouldn't be impossible... It's a "Home-Box" brand so......do they sell the support bits alone?

Seriously i would contact HomeBox. The tubes can be whipped up by any metalworker, but the corner bits are hard to make but easy to ship. cn