Harmsco SC/TC105 BF105 Filter Cartridge - 105 Square Feet Diving Board Email The rim is regulation size

The rim is regulation size (18 inches)

Body made of PVC

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The Spartan All Grit Brush treats black algae without scratching pool surfaces

you can test these three factors quickly and accurately with this handheld meter

Harmsco SC/TC105 BF105 Filter Cartridge - 105 Square Feet Diving Board Email The rim is regulation sizeThis is a Harmsco Standard Cartridge Filter Element with a media area of 105 Square Feet. This filter cartridge is designed for BetterFilter BF105. Harmsco SuperTuf Polyester Plus cartridges offer superior water clarity, polish, and sparkle for your swimming pool water. Polyester Plus, a technical media exclusive to Harmsco, filters from 20 microns down to between 3 5 microns. This offers you the finest filtration available as fine as diatomaceous