I got these all standard size 1 1/4" dia. - 36" length PVC pipe at Home Depot. I would have preferred white but here in Toronto white PVC seems to be hard to find and couldn't seem to find the smaller diameter either. But that's ok - I ended up making a larger box that can be used for bigger setups and the sturdier pipe keeps the whole rig from falling over. If making your own, I recommend assembling it on the floor at the store to ensure you get what you want. You'll attract a few people too asking questions about what you're making - this gives a high fun factor. Total cost of parts with tax CDN$123.00. I was surprised at the cost of PVC pipe, $5 per 36" tube - still a lot cheaper than buying a pro rig from a photo equipment supplier. The elbows and T-sections were around $1 to $3 each.