Clopay Garage Doors' Intellicore Insulation Technology is a polyurethane foam that is blown in to the garage door, expanding through each panel. Clopay's Intellicore insulation, have some of the "highest R-values in the industry, up to a 20.4." Most Clopay styles have four different levels of R-Value. By purchasing an insulated garage door, you may help your energy efficiency of your home, resulting in lower energy bills, no matter the season! Not only can it have a high R Value, doors with Intellicore are also quieter AND stronger. "Scientific tests show that a Clopay garage door section featuring polyurethane insulation is nearely twice as strong as a polystyrene insulated door section of the same thickness." It can provide greater resistance to everyday wear and tear. "Essentially, a Clopay door with Intellicore with look better, longer."