A heavy duty power adjustable door closer, suitable for high-traffic commercial applications such as schools, public buildings, hotels and hospitals etc Semi Radius slimline cover and matching armset Figure 66' bracket included for parallel arm fitting All fixings included for installation Suitable for 30minute and 60minute fire doors. Power adjustable, sizes 2-5 by 'valve' which means the power size is adjusted by adjusting a small screw in the unit of the closer. This means you can fit the closer and adjust the power size easily, to suit the width/weight of the door Full fitting instructions included with each unit This door closer meets the required opening forces for DDA - BS 8300 (when fitted in conjunction with a fully DDA compliant doorset)