General description Replacement filter designed for Backpack Vacuums, specifically models 0885-20 and 0885-21HD. This filter is compatible with part number 49-90-1963 and is made from high-quality materials, ensuring optimal performance for your vacuum cleaner. Technical specifications Material: Plastic Filter efficiency: Captures 99.97% of particles larger than 0.3 micrometres Package contents: 2 HEPA filters (part number 49-90-1963) Allowed measurement error: +/- 1-3 cm Usage These HEPA filters are easy to clean and install, making them suitable for various environments including kitchens, living rooms, study rooms, and outdoor areas that require fine dust collection. Other information Please note that there may be slight color differences due to light reflection and different displays, which do not affect the use of the product.