DETAILS: Chief Manufacturing is the leader in Presentation Support Systems. Chief designs, manufactures, markets, and distributes internationally a broad product line for the audio/visual/video presentation market. Products include LCD Projector ceiling mounts, wall mounts, electric lifts, carts, and stands, Plasma Display ceiling mounts, wall mounts, electric lifts, and carts. Chief also has a full accessory line for most installation applications.CMA-450 Suspended Ceiling Kit is designed to sit above with safety wire. It features 9 mounting hole positions for attaching to 1 1/2" NPT pipe, and a flush mount option for mounting directly to RPA ceiling mount. It comes with a 3-m safety wire, a 6-m strand wire and a chrome ring for finishing off the mounting hole. Product Description Chief CMA 450 - projector ceiling mount plate Product Type: Projector ceiling mount plate Dimensions (WxDxH): 23.7 in x 23.7 in x 3.4 in ALTERNATE ITEM #: CMA-450 UPC: 0841872002774