11 52 00 Audio-Visual Equipment
11 52 19 Players and Recorders
11 52 13Projection Screens11 52 13.13Fixed Projection Screens11 52 13.16Portable Projection Screens11 52 13.19Rear Projection Screens11 52 16Projectors11 52 16.13Movie Projectors11 52 16.16Slide Projectors11 52 16.19Overhead Projectors11 52 16.23Opaque Projectors11 52 16.26Video Projectors11 52 19Players and Recorders11 52 23Audio-Visual Equipment Supports11 52 33Interactive Displays