Compatibility: Filter-Monster replacement filter bundle compatible with IQAir V5-Cell Gas and Odor Filter. Engineered to be compatible with IQAir HealthPro Series air purifiers, but not compatible with the HealthPro Compact air purifier. Replacement Time: Recommended to change this filter once every two (2) years under normal conditions, and more often under harsh air conditions. Package contains one (1) replacement filter. Package contains: (1) replacement filter. Dimensions: Each filter measures 13 x 13 x 3.54 inches. Included in the package is a V5 Cell Filter compatible with IQAir Healthpro Series. Replacement Time: Recommended to change this filter once every two (2) years under normal conditions, and more often under harsh air conditions. Package contains one (1) replacement filter. Package contains: (1) replacement filter. Dimensions: Each filter measures 13 x 13 x 3.54 inches. Included in the package is a V5 Cell Filter compatible with IQAir Healthpro Series. Filter-Monster Branded Replacement Air Filter compatible with IQAir HealthPro Series V5-Cell Gas & Odor Filter Key Features: -V5-Cell Compatibility: This compatible air filter aligns with the V5-Cell filter design, harnessing the power of activated carbon to effectively reduce harmful VOCs (volatile organic compounds) and other chemicals from your indoor air environment. Keep your IQAir HealthPro Series air purifier performing at its best with the Filter-Monster Replacement Air Filter. Invest in cleaner, fresher air for you and your loved ones today!