The 101 Series Overhead Door Closer Surface Mounted in delivers strong and dependable door control for heavier doors in commercial and high-traffic environments. With a power adjustable size 3–6, it is suitable for doors weighing up to 120kg and widths of 1100mm. Featuring adjustable closing and latching speeds with built-in backcheck, it ensures smooth, controlled operation, helping prevent slamming while extending door and hardware lifespan.