Briton EN2-4 Transom Closer Adjustable Silver B2800 Transom Closer is used to ensure automatic door closing for energy efficiency, security, accessibility, and noise reduction in various settings. Transom Closer Function - automatically close the door after it has been opened, ensuring that the door remains closed and latched, even when left unattended. Features: Adjustable spring strength 2-4 to suit door size and site conditions Durable cast iron construction ensures product longevity Heat treated forged steel piston Adjustable closing and latch speed Adjustment valves concealed behind transom cover Optional 90° and 105° Hold open to ease accessibility Fits inside standard aluminium head section Side load arm standard Specifications: Power: EN2-4 Minimum Door Width: 850mm Maximum Door Width: 1100mm Door Type: Timber or metal Minimum Door Thickness: 37mm (Metal) Minimum Door Thickness: 44mm (Timber) Door Weight: 40kg to 80kg Applications: Non hold open Hold open 90° Hold open 105° Maximum angle of opening: 130 degrees Adjustment controls Closing speed: 90°-15° Latching speed: 15 to 0 degrees Finish: Silver