Wall to Wall Protection Array™ Wall can be installed on a range of wall materials with minimal installation requirements. Clean, subtle design includes integrated Lookout display providing Air Quality status to users of an area Available in 2 sizes, AW1 unit covers 600 square feet and AW2 unit covers 1000 square feet Designed for Maximum Flexibility - Wall units are easily installed to walls and the stand units can be rapidly moved and repositioned wherever needed, no installation required.