PE-75-P01H-WW-50 is the bag description for an Eaton SENTINEL filter bag made of polyester felt and ring. This bag has a micron rating of 75 and is made to fit size 01 filter housings. Eaton SENTINEL bags are designed to eliminate bypass and adapt to the pressures, temperatures and micron rating of your application. The special seal is what allows it to do this, activating with increases in differential pressure. The polyester felt used is silicon-free and welded together, not sewn. Handles make for easy removal when the bag is full. Comes in box quantities of 50.