DCN516 Heavy Duty Surface Mounted Door Closer - Regular Arm - Aluminum FinishArrow DCN516 Heavy Duty Surface Mounted Door Closer Regular Arm Aluminum Finish The Arrow DCN500 Series Heavy Duty Surface Applied Door Closers are ideal for Institutions or other high traffic applications. The DCN500 is designed for end users looking for value and versatility in a rugged design making this series suitable for a wide variety of applications. Features Heavy duty cast iron body. Hardened steel rack and pinion. High tensile steel