Feature: 1. Compatibility: Part number 9991467 R4, specifically designed for Dolphin Active 20 and for Explorer E30, strong compatibility ensures a perfect fit for your pool cleaner, allowing for easy installation and replacement. 2. Ultra Fine Filtration: With an ultra fine design, the pool cleaner filter effectively filters out tiny impurities and contaminants in the water, keeping the water clear and transparent. 3. High Efficiency Filtration: The ultra fine filter features high efficiency filtration capabilities, effectively capturing small dirt and impurities to provide you with a clean and healthy swimming environment. 4. Long Lifespan: Made of PP, PET, activated carbon material, the filter exhibits excellent wear proof performance and durability, ensuring stability and longevity even with long term use without deformation or damage. 5. Easy Cleaning: The ultra fine filter is easy to clean and maintain, simply cleaning it can restore the filter's performance, extending its lifespan and providing you with a more convenient cleaning experience. Specification: Item Type: Pool Cleaner Filter Material: PP, PET, Activated Carbon Weight: Approx. 480.00g/16.93oz. Package List: 4 x Filters