Winix WRF10UL Size 10 Ultimate Cassette; fits size 10 models plus 9300, 9000S, 5000S
The "Ultimate" in filtration! Winix's very own Ultimate Filter Cartridge. Fits WInix Air Cleaner models: 9000S and 9300.
  • US Warranty 1 year limited warranty on defects in materials and workmanship.
  • Non-US Warranty: 30 days parts and labor