What is this? Cloth dryer exhaust filter replacement is a filter attachment inside the dryer, designed to keep the dryer running at peak efficiency, extending its usage life. What will I get? Package Content: 6 x Cloth Dryer Exhaust Filter; Outer Diameter:227mm/9 inch; Inner Diameter:33mm/1.3 inch; Material: Fiber Cotton Are there any advantages of the product? Very good filter performance, the dryer filters can filter fine hair and dust particles. Large dust holding capacity, ventilation penetration, good hand feel. How to use it? Easy to install, simply remove the old dryer filter and replace it with a new one. Gently remove the filter and clean with a vacuum cleaner or soft brush. What should I notice? Please check the specification and size before ordering.