Custom cut. Im in the So Cal area.
Check online or in the yellow pages of the phone book for a class company. They're able to get glass of many thicknesses and can also bevel or grind the edges. They'll install it for you, too.
Look for a Glass Company (Store). They have anything you need. If you do not have access to such a store, you may go to Home Depot or Lowe's and get some heavy Plexi Glass. They will even cut it for you. Probably a better solution for a bathroom since you do not have to worry about breakage. I got some Marble at a natural stone Place.to do something like you are trying to do. I am thrilled with it. It was very cheap.
