• GOOD REPLACEMENT: Compatible with Sundance Ultra Set 6541-397(6473-164 & 6473-165), Sundance Spa Filter 880 Series, Sundance Microclean Ultra Set, Baleen AK-80802, AK-6541397, FC-2772, UFC-397. Note: All manufacturers' names and part numbers remain the property of their respective holder(s) and are used for compatibility purposes only. Chryseos is an independent brand.
• FILTER SIZE: Outer Filter: Length:19-9/10"; Outer Dimension: 8-1/4"; Top opening: 4-3/20"; Bottom opening: 1-1/2"; Inner Filter: Length: 18-3/5"; Outer Diameter: 5-1/2"; Top opening: 2-9/25"; Bottom opening: 2-3/4" hole.
• ADVANTAGES OF FILTERS: These filters are easy to clean with good maintenance, and they are with long lifespan for extended use, making the clean and clear swimming experience with effective ones.
• EASY INSTALLATION: These filters are easy to install and replace, really saving much time and effort.
• CUSTERMER SERVICE: We really spare no efforts to satisfy good shopping experience, so if there is any question of the using, cleaning, replacing, or you are not sure of the model names you need, please kindly come to us, we would offer you good service!