The Hermetic Passbox permit material to be exchanged between separate rooms, in controlled environments, without compromising the sterility of the material or the clean room. Designed for Hospitals and laboratories Clean rooms. The Hermetic Passbox is made of AISI 304 stainless steel. The Passbox control panel, uses universal symbols, through LED light, for an easy visualization of its status or stage. For that purpose, Hermetic Passbox has two doors interconnected with a system of electromechanical double interlock such that both cannot be opened simultaneously. The equipment works as an breath block device, preventing the contaminated breath from passing to the clean room.