Overhead door closer power size 2 to 4. Silver body, polished nickel arm and cover. Suitable for doors up to 80 kg, 1100 mm 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