A popular medium-duty door closer, fully power adjustable, suitable for general commercial applications, apartment entrance doors, office interiors, factory partitioning etc A small, yet powerful door closer, with Radius 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 2-4 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 Adjustable Backcheck function included on this model, which means you can 'check' the door as it swings back, preventing it hitting walls and fixtures with such force. Note; this does not 'stop' the door; it simply 'checks' the door Full fitting instructions included with each unit