TOA's PC-5L Clean-Room Ceiling Speaker;is a 3.5" full-range ceiling mounted speaker in a completely sealed enclosure. Able to resist chemical disinfectants and prevent dust particle creation, this speaker is ideally suited for clean-room environments such as a hospital rooms, ;laboratories and dark rooms for film develoment. Dust Particle Prevention No dust particles are produced by the high-molecular substance speaker vibration, thus helping to prevent contamination. JIS B-9926 Class 1 Chemical Resistant Grille With resistance to disinfectant chemicals like formalin and iodine, this speaker is suited for clean rooms such those that would be found in hospitals and laboratories.

• 3.5" full-range ceiling mounted speaker in a completely sealed enclosure