LSDA DC6816 is a heavy-duty door closer designed for high traffic openings. 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. This closer is recommended for use on either interior and exterior doors. 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. Typical applications include interior and exterior doors of Schools and Universities, Multi-Family Housing, Hospitals and Industrial Facilities.