spa filter element Unicel 6CH-940 Pleatco PWW50 205mmx150mm,with35mm hole hot tub filter cartridge system element - AliExpress
2005+ Jacuzzi® Hot Tub Spa Filter J-210, J-215, J-220, J-225, J-230, J-235, J-245, J-275, Diameter: 4-15/16", Length: 13-5/16", Center Hole 2-1/8"
How Do Your Hot Tub Filters Actually Work | Cal Spas of Minnesota
Tier1 15-1/2 in. x 6-5/8 in., 240 sq. ft. Pool & Spa Filter Cartridge for Jacuzzi J300 6541-383, J300 Series Hot Tubs (4-Pack) TIER1_PAS_1342_4_PACK - The Home Depot
Replacement Spa Filter for Hudson Bay Hot Tubs PRB50-IN