General description New high-quality materials make this Pre Motor Stick Filter Replacement for Dyson DC28C, DC33C, DC37, DC39C, and DC53 vacuum cleaners durable and highly compatible with the equipment. Clean accessories help maintain your vacuum's peak performance by effectively filtering dust, dirt, and other impurities, while also reducing the infiltration of allergens into the air. Technical specifications Color: as shown Material: plastic Package Contents: 2 x Filters, 1 x Cleaning Brush Measurement allowed error: +/- 1-3 cm Usage To achieve the best cleaning and filtering effect, it is recommended to replace the cleaning accessories every 2-3 months, depending on the frequency of use. The filter helps keep the robot clean and running normally, while also preventing dust and dirt from entering the robot's motors and other parts, thereby extending its lifespan.