The above-the-door mounted MCI™ SanitizAIR Curtain is designed to protect the indoor environment and, thereby, improve indoor air quality by dealing with pollutants in a proactive way. From above any entry or exit door, the MCI™ SanitizAIR Curtain produces aggressive ionized oxidizers and trademarked MCI™ multicluster ions that are then delivered and distributed by means of a wall of clean air.