Features: * brand new and high quality *Made of high-strength materials, *High quality air filter, can replace your humidifier filter, return to clean air *Healthier lifestyle: high quality filters prevent the release of limestone, and fungi from the air *If you are tired of changing so many humidifier filters every season and wish you could get that you can wash, clean, and reuse over and over again, you have found the right product! *This humidifier filter is made with Dura-ester, THIS IS NOT A PAPER PRODUCT! Dura-ester is a synthetic polymer that draws water quickly yet resists calcification and . When it gets dirty it can be regenerated by washing with cold water and soap. *Replacement humidifier wicking filters use a patented design that helps inhibit 99.99% of growth and migration of particles on the filter. A blue pre-filter layer helps capture large particles. *Depending on the hardness of the water used in the humidifier and other factors (for example, temperature, use of algaecide, etc.), this filter can last five to twelve times longer than conventional disposable ones. It will pay for itself in no time! Specifications: *Fit model: The “A” wicking filters (HAC504) for Honeywell Humidifiers in the HCM-350, HEV355, HCM-710 and HCM-315/HEV312 Model Series *Color: As Pictures Show Warm Tips: Please check the model, appearance and size before purchasing. Package Contents: 2*Filters Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. 【Efficient Replacement Filter】Made of high-strength materials, this replacement filter is designed to effectively filter the air and provide clean and air for your humidifier. 【Reusable and Easy to Maintain】Unlike traditional disposable filters, this filter can be washed, cleaned, and reused multiple times. It is made with Dura-ester, a synthetic polymer that resists calcification and , long-lasting performance. 【Improved Filtration System】Featuring a patented design, this filter helps inhibit the growth and migration of particles, capturing even large particles through its blue pre-filter layer. Enjoy cleaner and healthier air in your home. 【Extended Lifespan】Depending on water hardness and other factors, this filter can last five to twelve times longer than disposable ones. This not only saves you money but also reduces the frequency of filter replacements. 【Wide Compatibility】Compatible with the HAC-504 series, this filter is designed to fit humidifiers in the HCM-350, HEV355, HCM-710, and HCM-315/HEV312 model series. Please check the model, appearance, and size before purchasing.