Suspended Ceiling Projector System. System comes out of box in the order needed with mount and column preassembled. Adjustable ceiling plate allows placement above or below tile and accommodates inconsistent T-grids - Compatible with 2' x 2', 2' x 4', 60 x 60cm, & 62.5 x 62.5cm ceiling grids. Detachable electric plate for pre-wiring - Compatible with popular 2 gang adjustable mud rings. Tool-FreeMicrozone adjustment eliminates the need for set screws.