Replacement 3M high flow cartridges are made of deep fine polypropylene or glass fiber membrane as filter media, with a large diameter of 6.5 inches / 165mm, no center rod, unidirectional opening, and specially designed to flow the liquid from the outside to the inside, ensuring that all contaminant particles are trapped outside the cartridge. The ultra-high flow rate design allows for a significant reduction in the use of cartridges and filters for the same flow rate application, resulting in significant savings in equipment investment costs and labor costs.