27 41 00 Audio-Video Systems
27 41 16.51 Integrated Audio-Video Systems and Equipment for Classrooms
27 41 13 Architecturally Integrated Audio-Video Equipment 27 41 16 Integrated Audio-Video Systems and Equipment 27 41 16.25 Integrated Audio-Video Systems and Equipment for Restaurants and Bars 27 41 16.28 Integrated Audio-Video Systems and Equipment for Conference Rooms 27 41 16.29 Integrated Audio-Video Systems and Equipment for Board Rooms 27 41 16.51 Integrated Audio-Video Systems and Equipment for Classrooms 27 41 16.52 Integrated Audio-Video Systems and Equipment for Religious Facilities 27 41 16.61 Integrated Audio-Video Systems and Equipment for Theaters 27 41 16.62 Integrated Audio-Video Systems and Equipment for Auditoriums 27 41 16.63 Integrated Audio-Video Systems and Equipment for Stadiums and Arenas 27 41 19 Portable Audio-Video Equipment 27 41 23 Audio-Video Accessories 27 41 33 Master Antenna Television Systems 27 41 43 Audio-Video Conferencing