Filter Cartridge Diameter: 4-15/16", Length: 13-1/2", Top: Handle, Bottom: 2" Female SAE Thread, 50 sq ft by ProLine | Spa Parts + by Allied
How do I measure my spa filters / swim spa filter cartridge?
Goplus 6 Pack Hot Tub Pool Spa Filter Cartridge Pump Replacement 120 Fold Easy Set - Walmart.com
Replacement Filter Cartridge for Top Load and In-Line Filter Systems Hot Tub and Spa Replacement Part. SpaGuts Premium Spa and Hot Tub Replacement Parts.