The filters was an exact match for my spa, delivery was fast and pricing extremely competitive. Will buy from them again.
Genuine product manufactured by: Guardian Filtration
Length: 23-5/8"Diameter: 5"Top opening: 2-1/8"Bottom opening: 2-1/8" Replaces popular brand part numbers: Unicel C-4970 Filbur FC-2930 Pleatco PCAL75 Features: 75 sq. ft. of high-quality filtration fabric Exclusive Expansive Flow™ core Alternative filter names: 817-7500, SD-00592, Waterway 75, 17-175-1839, APCC7237, 17519, PCAL 75 Used in pools/spas made by: Cal Spas, Leisure Bay Spas, Rec Warehouse, Sunbelt Spas, Waterway Plastics & other manufacturers By Guardian Filtration Products • 423-178