11 52 00 Audio-Visual Equipment
11 52 16.13 Movie Projectors
11 52 13 Projection Screens 11 52 13.13 Fixed Projection Screens 11 52 13.16 Portable Projection Screens 11 52 13.19 Rear Projection Screens 11 52 16 Projectors 11 52 16.13 Movie Projectors 11 52 16.16 Slide Projectors 11 52 16.19 Overhead Projectors 11 52 16.23 Opaque Projectors 11 52 16.26 Video Projectors 11 52 19 Players and Recorders 11 52 23 Audio-Visual Equipment Supports 11 52 33 Interactive Displays