Looking for particular diffuser frame

Hello,

I was in Manhattan the other day doing an engagement shoot and after my car got towed (just thought that would be a funny tidbit to throw in there), I noticed in the middle of Chelsea Square, a shoot going on (pro shoot I assume based on the number of people and equipment).

One of the light modifiers they had was a diffuser, approx 6x8, maybe even bigger, wasn't examining it too closely. The main thing I noticed about it was the frame they were using. I was essentially an A-frame bent at an angle, with the top of the A frame being the part on the ground...here's a silly little diagram...

My question is. Has anyone seen these for sale anywhere? I've looked but can't really seem to find them. I would really like to get one for a fashion shoot I have coming up.

Thanks for any help (sorry for the lame diagram).

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I bet you could build it very easily and cheaply from PVC pipe, elbows, and purple glue at the hardware store. I would use pins instead of glue to secure some of the joints, to make it possible to break down the frame into a few sections for storage.