General description Replacement HEPA filters designed for Bissell vacuum cleaners models 20331, 20339, and 2033. These filters are made from high-quality materials, ensuring durability and practicality. They effectively maintain the vacuum cleaner's performance while minimizing the penetration of dust, pollen, and other allergens into the air. Technical specifications Material: Plastic Package Contents: 6 x Filters, 6 x Cotton Filters, 1 x Cleaning Brush Measurement allowed error: +/- 1-3 cm Installation Simple installation process; filters can be easily removed and replaced. Usage It is recommended to replace the filters every 2-3 months or based on usage to ensure optimal performance of the vacuum cleaner.