29 PER PACK - BULK LOT OF TWENTY-NINE FILTERS!!! Product Description American Made!!! New in Factory Packaging (Please scroll to see full detail) Replaces the following filters: Fits: Rainbow Dynamic 25; Sundance Sweetwater: Suntub, 6540-471; Freedom Spas: After 1993; Hydrowave Spas: Stressbuster; Waterway: 817-5000; Arctic Spas: 817-5000; Belize Spas: Year 2002, Models 2000 2000L 3000L Sundance 6540-471, Rainbow Plastics 17-2325 Coleman 100533, 3301-2145 Pentair R173434 817-5000 Vita Spa and Sundance 6540-471 PLUS MANY MORE! THIS IS ONE OF THE MOST POPULAR SPA FILTER CARTRIDGES MADE Rainbow Dynamic 25 Waterway: 817-5000 Arctic Spas: 817-5000 Belize Spas: Year 2002, Models 2000 2000L 3000L Measurements: Length: 13 - 5/16" Outside Diameter: 4 - 15/16" (Also replaces 5") Top Opening: 2 - 1/8" Bottom Opening: 2 - 1/8" Other popular brand part numbers Unicel - C-4625 C4326 25 25 sf Filbur - FC-2370 FC2370 Pleatco - PRB25 Manufacturer of this cartridge: Guardian Filtration Products (USA) Part number 413-106 Feel Free to eMail FilterDeal (at) yahoo . com or call 724.699.6222 pricing on: Large quantity discount Other cartridge sizes