Usage Tips:REUSABLE DESIGN: Crafted from blended synthetic fibers in a gray carrier, our foam pollen filters are engineered to trap dust and pollen effectively. The ultra-fine filters, made from polyester fibers in a light carrier, are designed to capture smaller particles and neutralize odors for a refreshing sleep environment. COST-EFFECTIVE SOLUTION: This package includes 2 Foam Pollen Filters and 6 Ultra Fine Filters, totaling 8 pieces. For optimal performance and a restful night, it is recommended to replace the filters every two weeks, making this kit a budget-friendly choice for maintaining your CPAP device. PERFECT COMPATIBILITY: Specifically designed for the Dream Station 2 CPAP unit, this filter kit ensures seamless fit and function. The filters maintain excellent air flow, helping to preserve the device's efficiency and your continued enjoyment of clean, fresh air during sleep. SIMPLE MAINTENANCE: The filter material is permanently attached to the frame, eliminating the need for complex assembly. This design simplifies the replacement process, allowing for straightforward maintenance without any hassle. EASE OF INSTALLATION: Installing these filters is a breeze. Simply layer the ultra-fine filter on top of the reusable filter and insert them into the air inlet of your CPAP device. This setup ensures that you and your loved breathe clean, healthy air every night. Color: grey Material: Plastic + cotton The actual product may have slight color difference or difference, which not affect the use Package Contents: 2 x Pollen Filters 6 x Ultra Fine Filters Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.