The PureAir Package is an air purification system for air curtains that complements the built environment’s indoor air quality and disinfection efforts. The PureAir Package includes the NPBI module; a washable 1-inch-thick aluminum mesh MERV-8 particulate filter and a 10-speed ½-hp electronically commutated motor. When the door is open, the air curtain operates as both an air curtain and an air purifier.