The 950 closer features 2 speed controls for closing and latching. Non-handed and using the same template as many other national brands, including the Parker 500, the Yale 50 and the Norton 1600, the S. Parker 950 is a rack and pinion action door closer with all temperature hydraulics in an aluminum housing. Separate controls adjust, at any time, both closing and latching speeds. S. Parker guarantees trouble free operation of each closer for 10 years. Each closer is UL tested, and listed for use on hollow metal fire rated doors. The exterior housing is made of high tensile strength aluminum. This S. Parker 950 Series closer fits even extra heavy doors. Duranodic Finish.