aFe Power 72-30018 Pro-GUARD 7 Replacement Air Filter for 07-11 Jeep Wrangler JK with Magnum FORCE Stage 2 Cold Air Intake System

Patented Filter Technology
To address the need for extra protection from dust and dirt with washable/reusable oil-impregnated cotton gauze filters, aFe developed a new filtration technology so revolutionary that we applied for and received a patent. This new filtration technology is aptly called Pro-GUARD 7. 5 layers of progressively finer mesh medical grade cotton gauze with micro fibers that attract smaller and smaller particles as air passes through is combined with 2 layers of random-porosity non-woven synthetic polyester fabric. These 7 layer combination of cotton gauze and non-woven polyester is sandwiched between 2 layers of epoxy coated aluminum wire mesh.