The BOSS DOOR CONTROLS TS5.224 Architectural Slimline Overhead Door Closer is a high-performance solution designed for doors in frequent use, featuring an adjustable power size range of EN 2-4 controlled by a valve and complete with a backcheck function. Ideal for preventing damage from excessive force, the backcheck slows the door’s movement, protecting frames and hardware. It supports doors up to 80kg in weight and 1100mm in width, with a 180° opening angle. Adjustable closing speed and latch action ensure smooth and controlled operation. Fire-tested for up to 120 minutes on timber doors, it meets CE Marked, UKCA Marked, and Certifire Approved safety standards. Supplied with a matching cover, armset, and PA bracket for inward and outward closing doors, this closer is available in 11 finishes, including Silver, Satin Stainless Steel, Polished Brass, and Matt Black, and comes with a 10-year guarantee.