The Mintie ECU4 AnteRoom/Isolation Kit comprises three essential components: the ECU4 Frame, ECU4 Envelope, and Sidewall Flange. Together, these components create a portable anteroom equipped with a high-volume, high-efficiency HEPA filtered negative air machine. This system allows for the creation of negative air pressure relative to the treatment area and the surrounding corridor, simulating the functionality of a fixed Airborne Infection Isolation Room (AIIR) without the need for expensive modifications.