Easy to install and a flexible solution, the 110-4089U-LC includes a 2' x 2' plate designed to sit above the suspended ceiling, unseen and secured by safety wire. There are nine possible mounting hole positions with plates containing threaded ends for accepting the 1 1/2" NPT extension column. This offers great flexibility for mounting. Comes with wire panel support, electrical box, cross tee support, screw lags and grommet, plastic exterior raceway conduit, projector cable lock, and fixed white extension column 6 in. length 1.5 in. diameter.