An energy efficient glass that has Special coatings that reflect infrared light, keeping your home warmer in the winter and cooler in the summer. These low-E coatings also reflect ultraviolet light, which helps protect interior furnishings from fading. Another feature of Low-E glass is that it contains Energy-efficient argon or krypton gas between the panes. These odorless, colorless, non-toxic gases insulate better than air. We also offer additional UV-protective coatings as well, though these may not be good options for homeowners with house plants as additional UV coatings will block rays vital for plants.