The HT50P1SH is a 50 Micron(s) P1 – 7.06″ x 16.5″ Nomex Liquid Bag Filter with a Carbon Steel Ring. It is constructed using 100% synthetic fibers. The proper combination of fiber diameters, weights and thicknesses result in an economical depth filter media. To reduce fiber migration, Nomex bags are singed. Bags are rated up to 425° F and are intended for high temperature applications.