Built to Last 100% Aircraft Aluminum (6061-T6) Construction Easy to Install All the necessary hardware included. Detailed instructions for easy and quick installation. Extension Length Sets the projector approximately 5 inches away from the ceiling Perfect Fit This mount is designed to fit the projector models listed in the title only. If your projector make and model is not listed, this mount may not fit. The projector plate you receive may not resemble the plate shown in the picture(s), but it will fit the projector models listed here. Compatible Projector Models NEC P452H P452W P474U P474W P502H P502W P554U P554W