Various brands will be shipped depending on Stock: Dupont, Misty, CRC, and Spray All. Spray is useful for protecting the glass when new and after every cleaning. Helps to keep the glass clear and free from cracks and frosting. Simply spray a small amount on a rag or paper towel and wipe on glass, then rub in to remove any streaks.
We have had our glass on shop stoves remain clear for over 2 years using this method and by cleaning the glass every couple weeks with a damp paper towel or ceramic stove top cleaner. Of course this must be all be done after the glass has cooled.
CAUTION: NEVER CLEAN GLASS OR APPLY SILICONE WHEN GLASS IS HOT!