I built a couple of my own, depending on the size of the paper (no use using a 24 x 12 washer to wash 8 x 10) I got some off-cuts of material cut cheaply, and glued them up. Ten years on, they're still working perfectly. Instead of paying 300 each, they cost about 30....If anyone wants more detailed info, mail me at peter@monochromephotography.com with your address and I'll send you instructions.