The cast iron closer body and forged steel arms are designed to deliver years of service and it is well suited for the high traffic demands of institutional applications. Precision needle bearings and high quality oil deliver smooth operation at a wide range of temperatures. Adjustable Back Check (BC) enables you to set the openings, as well as the closing speed. The door opening force, which may be limited to meet accessibility codes, can be field adjusted from size 1 to 6. Closer will come with adjustments for closing speed and latch speed. Some will offer adjustments for back check and delayed action.