Twelve (12) Pack Premium Humidifier Filter Replacement for MAF2 Natural-Breeze Humidifier Wick Filter NB203P improves the efficiency of your humidifier by trapping mineral deposits from the water. This PREMIUM QUALITY humidifier filter helps control dust and dirt build-up and prevents impurities from spreading by passing air through the filter. For optimum performance, the humidifier filter should be replaced at the beginning of each season and then every 4-6 weeks, depending on the usage and hardness of the water. Filter Specifications: -Replacement Humidifier Filter for Emerson Part # MAF2, Kenmore Part # 15508, and Noma Part #EF2. Also compatible with Emerson MoistAir Model #'s MA0600, MA0601, MA0800, & MA08000 as well as Noma CT0800, CT0800-0, & CT08000 and the following Kenmore model #s 15408, 154080, 17006, 29706, 29880C, -Extra melt-blown used between layers to help prevent the filter from separating. -Rigid construction to improve the structure of the filter once wet. -Quick and easy to replace protect your home air quality by replacing the filter every 2 months, or as needed. -Quantity: 12 Packs of filter-Dimensions: approximately 8.25 inches x 25.50 inches x 1 inch Disclaimer: This is a Natural-Breeze replacement filter, not an OEM filter. Please check your manufacturer's warranty with regard to the use of non-OEM parts. All mentions of brand names or model descriptions are made strictly to illustrate compatibility.