Hayward Star-Clear Plus C1900 Filter Cartridge - 200 Square Feet pool-dimensions_24x40 The kit is an excellent

The kit is an excellent supplemental kit to have on hand with your standard first aid kit

The overall width is 4-1/2 inches

This length is most commonly used

It is light enough to easily place on the bottom of the pool

If pH is above 7

Hayward Star-Clear Plus C1900 Filter Cartridge - 200 Square Feet pool-dimensions_24x40 The kit is an excellentThe Hayward CX1900RE filter cartridge has a media area of 200 square feet and is made of superior reinforced polyester pleated material with molded end caps. The precision engineered extruded core design provides maximum water flow while reducing energy cost. And the reusable filter cartridge provides a high degree of water clarity and longer filter cycles. Hayward filter elements are designed to meet NSF's high quality performance and durability