Each Door Closer Body comes packaged with Mounting Clips, Templates, and Instructions. Just select a Door Closer and add the different accessory parts (Pivots, Arms, etc.) you need to create the Door Closer package of your choice. The second is that by adding accessories you can get a Door Closer with the exact accessories you need for the job you are doing. The first is if you are only replacing a worn out Door Closer, you will reduce your costs by not purchasing unnecessary hardware. There are two advantages to buying our Door Closer Bodies with Mounting Clips. Conveniently Packaged with Templates and Instructions.Interchangeable with All Jackson® Style Overhead Concealed Door Closers.