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 algae. 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. 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!