Eastman Heat Mirror Insulating Glass

With a center-of-glass thermal performance up to R-20 (U-value down to 0.05), Heat Mirror Insulating Glass prevents heat loss and gain without adding weight to windows. Each window has one to three clear films that insulate the window to the level of a wall, lowering energy use and bills. The suspended film technology blocks more than 99.5 percent of UV radiation and outside noise. Eastman’s Heat Mirror IG comes with a 20-year warranty.