Aquachek Red 4-In-1 Test Strips, 50 Strips | 521252A FG1006 the PIN20 delivers consistent pore

the PIN20 delivers consistent pore structure and dimensional stability throughout its service life — resisting channeling and maintaining reliable dirt capture with every filtration cycle

confirm your filter uses a 7 full + 1 partial grid layout and that your existing grids measure 12" × 11"

Performance and fit are equivalent — always confirm by measuring your existing cartridge's length

Please check your ladder or rail

OEM Brand Product Name Part Number Notes Coleman Spas 50 sq

Aquachek Red 4-In-1 Test Strips, 50 Strips | 521252A FG1006 the PIN20 delivers consistent poreAquaChek Red 4 in 1 Test Strips, 50 test strips Tests for Total Bromine, pH, Total Alkalinity and Total Hardness Provides Test Results in seconds! To keep your pool at its best, test at each end at least twice a week, and test your spa before each use. Comes with complete instructions in multiple languages