Product Details:

For Exterior or Interior Doors Weighing Up to 350 Lbs (158 Kg) and 48" (1219 mm) Wide
Selective On or Off Hold-Open
Built-in Positive Dead Stop 

This CRL Rixson® Model 28 Center-Hung Floor Mounted Door Closer provides the best mechanical means of controlling a door. The weight of the door is supported by the bottom arm, which is directly connected to the floor closer spindle. The direct connection between the bottom arm and the floor closer spindle creates a tremendous increase in closing efficiency compared to surface or overhead concealed closers. This closer is capable of supporting exterior or interior doors weighing up to 350 pounds (158 Kilogram) and 48 inches (1219 millimeter) Wide.

Standard features include selective on or off hold-open, build-in positive dead stop, and separate independent valves for closing, latch and back check adjustments.   

Optional accessories that may be needed are:
253000 Floor Closer Cement Case
284720RH Closer Cover
282026 Bottom Center-Hung Arm
340 Top Center-Hung Pivot