Length: 18-1/4"Diameter: 8-1/2"Top: Reinforced castleBottom opening: 2-5/8"   Replaces popular brand part numbers: Unicel C-8320 Filbur FC-2750 Pleatco PSD125 Features: 125 sq. ft. of high-quality Filtration Fabric Expansive Flow™ core Break-resistant Guardian banding Alternative filter names: 6540-482, FC-2751, 17-175-1732, APCC7436, APCC7300, PSD 125   Used in pools/spas made by: Crystal Water Spas, Sundance Spas, Sweetwater Spas & other manufacturers   By Guardian Filtration Products • 819-198AM