Filter-Monster branded replacement filter compatible with Molekule pre-filter. Engineered to be compatible with Molekule Air Purifier. Coconut carbon filter removes VOCs (volatile organic compounds) and household odors from cooking, cleaning, smoking and pets. Recommended to replace every three (3) months for maximum efficiency, or more often depending on air quality and environmental factors. Package includes two (2) replacement pre-filters. Approximate Dimensions: 5.06 x 5.19 x 1.56 inches. Filter-Monster branded Carbon Replacement compatible with Molekule Air Purifier pre-filter removes harmful volatile organic compounds and household odors from the air. * Does not fit the Molekule Air Mini