Barndoor hanger hardware?

[Delphinus]

Any ideas where to look for barn door hanger hardware? I want to build my light frame slider for my tank room and I'm having a hard time finding stuff.

UFA has stuff but it's not cheap. The guy was like, "Well, yeah, you can get cheaper ones elsewhere, but our stuff is better". I guess if I really wanted to hang a 500lb barndoor, it's what I would want, but for a 25lb lighting frame I can go with something less beefy. (I should have just asked him "Can you name a place I can get it from instead please?" Darn it.)

I checked Home Depot, Rona and Totem online .. nothing (which doesn't really surprise me - I think this is probably a little too specialized)..