High-performance glass

The five Gorell high-performance glass option for its sliding patio doors incorporate a new Low-E coating that improves the overall thermal performance. In addition to the new Low-E component, Gorell systems consist of either double- or triple-insulating glass, argon or krypton gas between the glass panes and the PPG spacer system. Gorell sliding patio doors featuring one of these five high-performance glass options qualify for the ENERGY STAR label.