This Drop Ceiling Mounting Plate provides sturdy support for Universal Adjustable Data Projector Mounts when installing the mount in a suspended ceiling. Designed for installing above 2' x 2' or 2' x 4' ceiling grid. Suspended Ceiling Mounting Plate has all the hardware necessary to attach the plate to your ceiling grid and give your Universal Adjustable Data Projector Mounts all the support it needs. Includes knock-outs for power and data. You supply the electrical outlet and "source" outlet, along with appropriate cover plates.