Open Box – New Condition. Note: All manufacturers’ names and part numbers remain the property of their respective holder(s) and are used for compatibility information only. Wowreed is an independent brand. SPECIFICATIONS: Outer: Length: 21 5/8″; Outside Diameter: 20 1/2″; Filtration Area: 350sq. Ft; Inner: Length: 29 1/8″; Outside Diameter: 12 7/8″; Filtration Area: 100sq. EASY TO CLEAN: This filter utilizes fabric structure design so as to make the impurities easy to be released and washed. It is recommended to wash the filters every 2-6 weeks in order to maximize the performance and capacity of it. In addition, our premium filter material keeps your water clearer and easier to clean. LONG LIFE: The filters are with solid end caps, good material and bands, which can be used repeatedly. Longevity and endurance are ensured. ADVANTAGES OF WOWREED FILTERS. We utilize qualified long-life material, it can make the filter more qualified and easier to clean, and more importantly, longer lifespan. Our filter utilizes premium fabric structure design so as to make the impurities easy to be released and washed, making your water clearer and cleaner. Our filter can be reused for several times, it has solid end caps and qualified material, so the products are with longevity and endurance. COMPATIBLE MODELS AND DIMENSIONS. Outer Length: 21 5/8. Outer Filtration Area: 350 sq. Inner Length: 29 1/8. Inner Filtration Area:100 sq. All manufacturers’ names and part numbers remain the property of their respective holder(s) and are used for compatibility information only.