Garage doors are classified into sectional and roller shutter types based on their opening methods. Sectional garage doors are suitable for most garage openings. If there is insufficient space, roller shutter garage doors can be chosen as an alternative. Both types are made of high-quality, easy-to-maintain steel plates or aluminum alloy, featuring sandwich-structured door panels filled with polyurethane foam for thermal insulation, and are available in a wide range of styles.