Features： *Made of high quality material, durable and practical to use. *Exquisite and delicate, highly matched with original equipment *To fit for Honeywell HRF-A300 / for HPA300 series s. Filter Measures: 14.25” x 17.25”. Compatible with: for Honeywell for HPA300, HRF-A300, Pre-filter A & HRF-AP1 series s. *Trap foul odors, dust, dander, pet hair and other airborne particles. *Keep your filters fresh and clean until you are ready for a change! We recommend changing filters every 1-2 months based on use. Package Contents: 4x 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. 【 Material】These replacement pre-filters are made of durable and practical material, ensuring long-lasting use. 【Perfect Fit】Designed to be highly compatible with Honeywell HRF-A300 / HPA300 series air purifiers. Filter measures 25" x 17.25". 【Effective Air Filtration】Effectively traps foul odors, dust, dander, pet hair, and other airborne particles, providing cleaner air for you to breathe. 【 Filter Maintenance】Keep your filters fresh and clean until you're ready for a change. We recommend replacing filters every 1-2 months based on usage. 【Package Contents】Includes a set of 4 filters to ensure a continuous supply.