Nature2 Fusion/Duoclear 35K Replacement Cartridge -Single filter-internal-diameter_6 1/2 inches The fabric is polyester with

The fabric is polyester with woven vinyl coating for strength and color-fastness

Purchasing this kit

The Big Horn is a classic dual post starting block featuring a 20 x 23 inch non-slip platform in your choice of colors

The Harmsco BF252 BetterFilter has a 252 square foot filter area

exactly 20 inches on center

Nature2 Fusion/Duoclear 35K Replacement Cartridge -Single filter-internal-diameter_6 1/2 inches The fabric is polyester withThis Nature2 35K replacement filter cartridge is used on the Fusion Duoclear filters. The Nature2 Fusion Duoclear cartridge can be used on either the Duoclear or Fusion filters for pools up to 35,000 gallons. Nature2's patented technology uses minerals to kill bacteria and control algae for up to six months. Nature2 mineral cartridges are environmentally friendly and produce sparkling clean pool water that is pure, fresh, and gently soothing with less