Filter-Monster Branded Replacement Pre-Filter Compatible with IQAir HeathPro Series Pre-Max Pre-Filter

Compatibility: Filter-Monster branded replacement filter compatible with IQAir Pre-Max pre-filter. Engineered to be compatible with IQAir HealthPro Series air purifiers. Not compatible with the IQAir Healthpro Compact Model. Replacement Time: Recommended to replace every 18 months for maximum efficiency. Dimensions: Each filter measures 13 x 13 x 3 inches. Included in the package is a Pre-Max Prefilter compatible with IQAir Healthpro Series.