I need to find a 30" x 30" free standing shower stall to replace old one

What exactly is you question, are you looking for a supplier or brand? Swanstone Products (http://www.theswancorp.com/index.php?page=landing_ts)

A brand doesn't concern me. A supplier would be great so I could buy one.

Mustee makes on fiberglass bathroom shower stalls walls floors enclosures - Mustee (http://www.mustee.com/products/durastall/30.shtml)

Thank you. I found it

If you do not find a Mustee to your liking let me know and I'll find more dealers

fiberglass bathroom shower stalls walls floors enclosures - Mustee (http://www.mustee.com/products/durastall/30.shtml)
Good luck, Tom