High Efficiency Air Purifier Filter Element Purifier Formaldehyde Filter Antiviral Dust Removal Cleaner Filter Element Description: Filter Frameless Dust Removal Cleaner Purifier Filter Element High Efficiency HEPA Filter Folded, soft, low resistance Cutable bendable Can be installed in air conditioning fans Cut to make a vacuum cleaner filter Specification: Product name: High-efficiency frameless HEPA filter Size: 400 * 300 * 10mm Color:White Purification project: PM2.5 particulate dust particles, second-hand smoke, smog, bacteria, etc. Material: composite filter paper Suitable for: home DIY purifier, can be cut into a variety of materials for DIY, vacuum cleaner filters, fresh air filters and so on. Package include: 1x Air conditioning filter