Efficient Dust Filtration for Cleaner Air Compatible with Purifier models 3139A and 3139B, this 2pack of replacement filters is precisely designed to fit part model 3069. Whether at home or on the go, these filters provide dependable dust and particle capture to help maintain fresher, cleaner indoor air. Key Benefits: Precise fit for 3139A and 3139B purifier models, avoiding gaps or leaks in performance. Washable and reusable construction for longlasting use without sacrificing filtration efficiency. Engineered to maintain steady airflow, helping your purifier operate at performance. Dimensions of 6.11 x 6.03 x 2.75 inches ensure secure placement in the designated compartment. Made from strength, wearresistant materials that withstand repeated washing and reinstallation. Costeffective design reduces the need for frequent replacement filters, minimizing waste. Practical Use Scenarios: 1. Ideal for travelers who want to maintain air quality while using a compatible purifier in hotel rooms or vehicles. 2. for home environments where dust buildup can affect comfort and respiratory health. 3. Suitable for workshops or home offices where airborne particles from daily activities need to be managed. Easy Maintenance: This filter's washable surface allows fast cleaning under running water. No special tools or extra components are required. Simply remove the filter from your purifier, rinse thoroughly, allow to dry completely, and reinstall. This quick process ensures minimal upkeep time and helps you maintain consistent purifier performance. Built to Last: The robust, white filter material resists wear from repeated cleanings and retains its filtering capabilities over time. This durable design offers a practical solution for ongoing air quality management without compromising on effectiveness.