HALFIER Air MA-40 Replacement Filter Compatible with Medify MA-40 Air Purifier, 3-in-1 High-Efficiency HEPA and Activated Carbon Pre-Filter for MA40 MA40W MA40B Air Filter Replace, 2 Pack Brand HALFIER Material H13 HEPA, Activated Carbon Product Dimensions 17"L x 8"W x 1.77"Th Compatible Devices Modify MA Air Purifier 40 Series Item Weight 3.5 Pounds Number of Items 2 Manufacturer HALFIER Product Grade H13 Unit Count 2.0 Count About this item 2 Pack Halfier MA 40 Air Filter Compatible Model: 40 Replacement Filter Compatible with 40 Air Purifier Replacement Filter for MA40W MA40B, 2Pack 2 Pack 40 Replacement Filter Compatible with MA 40 Series Air Purifier, 40 HEPA Filter Replacement for MA40W MA40B 3 Layer Filtration System for MA 40 replacement filter captures 99.97% down to 0.3 microns from the air. We recommend replacing the filter every 5-8 months for optimal performance High Efficiency: 3-in-1 40 Air Filter High-Efficiency HEPA and Activated Carbon Filter for MA40 Air Purifier Filter Replacement We are committed to customer satisfaction. Save money with Midiex HEPA Filter! 25A613-02