Clopay Garage Doors featuring Intellicore insulation technology represent the ultimate smart choice for homeowners. Clopay Intellicore is proprietary polyurethane foam that is injected into a garage door, expanding to fill the entire structure. The result is a door with incredible strength and durability. Its dense insulation also produces a quieter door, while its industry leading R-values provide year-round comfort and improved energy efficiency. Modern Steel garage doors perfectly complement contemporary and mid-century modern home styles. Clopay very best door.