The Concealed Single Chain Door Closer in Satin finish provides discreet and reliable door control for timber fire doors. Featuring adjustable tension, it is BS EN 1634 fire rated to FD30, making it suitable for safety-focused installations. Designed for doors up to 830mm wide and 30kg in weight, it fits neatly with a closer size of 145 × 22mm and face plate size of 50 × 25mm, ensuring smooth, controlled closing while maintaining a clean appearance.