... more projectors displaying 2D,3D and 4D movie Two or two projector pallets easy to assemble and disassemble 3D PROJECTOR CEILING MOUNTMAIN FEATURES:1 ... ceiling mounting, especially for two or more projectors displaying 2D, 3D and 4D movie.3. Up and down structure, easy to ... *40cm(Non-standard sizes are available).5. Loading capacity: 60kg. 3D projector ceiling mount