Milk white plastic frame with transparent mylar “S” diaphragms and clear protective grille on both sides, allows each party to see and talk to the other, even if unit is not mounted in clear glass window. Can be mounted in door or wall. Provides visual and oral communication. Reduces telephone usage.
Saves time. Eliminates changing clothing on entering or leaving a clean room. Helps keep room contamination at a lower level. No air passage thru communicator. Stops drafts thru cashiers’ or receptionists’ windows. PVC vinyl seals hold room air pressure.