TO8 OmniFilter family of cartridges are constructed with a 70-micron porous polyethylene outer shell and durable polypropylene endcaps and incorporate a spun polypropylene core. Sandwiched between the outer shell and the core is a bed of granular activated carbon (GAC). The unique radial flow design offers the benefits of granular activated carbon (GAC) filtration, such as low-pressure drop, while at the same time significantly reducing the release of carbon fines commonly associated with GAC-style cartridges. Heavy Duty sizes and are ideal for high flow rate applications.