The CP-1PT is a universal ceiling mount plate that will accommodate 1.5" NPT pipe. The CP-1PT is used to provide asolid mounting base for long NPT pipe ceiling mast extensions. The CP-1PT has multiple, pre drilled hole patterns to attach to a variety of ceilings. With the cable pass throughs built in the bottom of the plate and the side of the pipe couple threading cable through the mast is a simple matter.