Applicable model: The vacuum cleaner filter element is suitable for Q6, Q7, Q8, WQ61, WQ71, WQ81. Precisely shaped to fit securely in place. Regular replacement: Depending on usage frequency, it is recommended to replace the filter every 23 months to maintain optimal performance. Improved cleaning efficiency: The vacuum filter helps reduce airborne allergens such as dust and pollen. Easy to install: Designed for simple installation and removal, enabling convenient maintenance and quick replacement of old or damaged parts. Premium material: Constructed from high-strength, environmentally friendly ABS and efficient air-filtering materials to support reliable performance and a healthier home environment. Note: Measurements are manually taken; please allow 13 cm variation. Color may vary slightly due to lighting and screen display differences. Actual product may differ slightly in appearance.