I've found two sources, Sterling Plumbing and Holcom and am seeking
other US suppliers. Tri-panel bath doors are pretty much like your basic
bypass-type, which has two panels of glass, except they have three
panels. Here's a (fairly pricey) example:
Thanks in advance for any leads!
Mike "Rocket J Squirrel" Elliott
71 Type 2: the Wonderbus
Click to see the full signature.