Great , thanks!!
Those shower doors look great...one of the issues a customer can get so frustrated dealing with is those hard water spots. After cleaning with Stone Pro Stone and Glass SCRUB you can apply a spray finish on it (not a sealer as glass is non-porous). Stone pro has a product called Finishing Touch Ultra which is an enhancer and protector which protects the glass from fingerprints and hard water spots. Just a quick spray and wipe and your done.