Mailboxes; installation of spacers; trenches and built-in installations; details of telecommunications installations. connectivity modules; details of access control; floor exits; exits for tables; cabinet details; tunnel details; exit details. details of telecommunications installations in classrooms; installation of rack for interactive monitors; multimedia projector; service installations on ceilings. details of fire alarm and smoke detection system installations; cctv installation details; details of flood sensor installation; fire-stopping foam. details of audio and video system installations in auditorium; multimedia projector installations; retractable electric screen installations; rack details.