Clopay Model 9200 "sandwich" doors feature environmentally safe, CFC-free, polyurethane insulation foam injected between two layers of galvanized steel, with a thermal break, offering an R-value of 17.2. The doors are available in short or long elegant panel and flush panel designs. Insulated windows are also an option. In addition to saving energy, the three-layer construction helps reduce noise and minimize unsightly dents and dings, one of the main reasons why homeowners choose to replace a door before it reaches its maximum life expectancy. This door qualifies for the Energy Tax Credit.