Keystone 5 micron GIANT® fine sediment cartridges feature pleated construction to provide a large amount of filtration surface area and greater dirt holding capacity. In water and water-like liquids, dirt is trapped on the outside surfaces of the filter cartridge. The large surface area of a pleated cartridge greatly increases the life of the filter and allows our filters to perform in the same manner as the hard working, long lasting air and oil filters in your car. Independent tests prove that a pleated cartridge will last 2 to 3 times longer than other types of sediment cartridges. Keystone’s addition of a small amount of polyester to the pleated media extends the cartridge life by adding strength for high pressure situations.

Keystone 20 micron GIANT® medium sediment cartridges feature pleated construction to provide a large amount of filtration surface area and greater dirt holding capacity. In water and water-like liquids, dirt is trapped on the outside surfaces of the filter cartridge. The large surface area of a pleated cartridge greatly increases the life of the filter and allows our filters to perform in the same manner as the hard working, long lasting air and oil filters in your car. Independent tests prove that a pleated cartridge will last 2 to 3 times longer than other types of sediment cartridges.

Independent lab testing shows that 20 micron GIANT® Dirt Hog™ heavy sediment cartridges have close to 25% HIGHER dirt holding capacity than pleated paper cartridges. Since Dirt Hog pleated polyester sediment cartridges are easily cleaned, they can ultimately remove 3 TIMES more dirt than other cartridges to SAVE YOU MONEY $$$$$$

Keystone offers GIANT replacement cartridges for sand and heavy — 30 to 50 micron — sediment removal. Each of these cartridges can be used in Keystone's full size housings.

Keystone 5 and 30 micron GIANT® economical string wound sediment cartridges feature wound polypropylene construction. They are designed to fit Keystone and most other competitive large diameter (4½") 10" or 20" filter housings. Cartridges meet FDA regulations.