FilterBalls Blu - 15 Microns - For Sand Housing width_2 3/8 Inches the walls are sold individually

the walls are sold individually with a maximum purchase of 4 panels

This is a replacement Hayward Lower Filter Body with Clamp for SwimClear Cartridge Filters and Pro-Grid Vertical Grid DE Pool Filters

flow meter

This is a Drop Test Chlorine Bleach (Iodometric) Test Kit

FilterBalls Blu - 15 Microns - For Sand Housing width_2 3/8 Inches the walls are sold individuallyThis is a one pound bag of FilterBalls Blu, 15 microns, for your sand filter housing. FilterBalls are made of a lightweight material that is 100 times lighter than sand. So you only need one bag of FilterBalls to replace 100 lbs. of sand. It makes changing the filter media so much easier than sand. FilterBalls work by trapping material like pollens, dead skin, hair, body oils, and other unwanted particles. They remove particles down to 15 microns