I am developing plans for a desk and hutch. I am considering a "roll top" to conceal a space in the hutch. Can roll tops be purchased to fit various spaces?

Can roll tops be purchased to fit various spaces?

Yes. A quick Google for "tambour doors" (http://www.google.com/search?ie=UTF-8&oe=UTF-8&sourceid=navclient&gfns=1&q=tambour+doors) yielded many sources, such as Cabinet Parts (http://www.cabinetparts.com/c/wood-tambour-doors/) for wood or Rollok (http://www.rollok.com/) for metal, but they aren't that hard to make consisting of multiple strips of wood with a glued and stapled canvas backing. If the door is large, a commercial model would have the advantage of offering a nice spiral takeup track for the door, and possibly torsion spring assist similar to garage door openers.