Sikkens 4oz Sample Cans Door & Window - A premium coating available in 4 colors plus clear satin and clear gloss for specialty applications such as doors and windows. Recommended for: Doors, Windows, Garage Doors, Fiberglass Doors. For proper color and sheen choose any Cetol Door & Window sample(s), and apply in any combination. Apply 1st coat of Cetol Door & Window sample Let dry 24 hours outdoors Repeat steps 1 & 2, two more times for accurate product representation.