Overhead door closer power size 2 to 4. Silver body, with a variety of finishes for the arm and cover. Suitable for doors upt o 80 kg, 1100mm wide. Closer can be fitted to inward and outward opening doors. Adjustable closing speed, latch speed, backcheck, delayed action and flat arm. Applications - Fig 1, Fig 61 and Fig 66. Suitable for use on 30, 60 and 120mm fire doors. BS EN 1634, BS EN 1154 : 1996