Harmsco, 9.75"x2.75" Pleated Sediment 5 Micron Filter, 801-5 Highly efficient filter cartridges made of pleated Polyester media for low pressure drop, high flow capability, increased contaminant removal, long filter runs, reusability and the lowest cost per gallon filtered.Features Pleated design with up to 50% more surface area than competitive filters resulting in superior performance and increased contaminant removal. Longer filtration runs for fewer change-outs and less maintenance. Low pressure drop. Thermally bonded for longer usable life. FDA approved materials – NSF 61 certified. Engineered media for superior performance. 7 micron ratings and color coded end caps for easy identification.