- Protective shipping caps and durable box construction protects the pipe during shipping- Cable routing hole with access through pipe- Works with flat-panel mounts and projector mounts- Works with any 1.5" NPT ceiling plate or accessory- Adjusts from 36 - 60 in. (914-1524mm) in 1 in. increments on a 1.5 in. threaded pipeThe APP-3660 adjustable height suspension adapter easily connects to any Premier Mounts 1.5" NPT ceiling plate or accessory. The APP-3660 features height adjustment from 36-60 in. (914-1524mm) in 1 in. (25.4mm) increments.