Unique & Concise Lattice Design: A perfect alternative to heavy curtains or expensive textured glass. Stylish chessboard lattice design. The product is installed indoors. Make sure the glass is clean; Remove the backing film; Spray lots of water; Use a squeegee to scrape away excess water and air bubbles; Tip: In cold winter, you can use a hair dryer or soak in hot water to soften.