Our air filters are designed to meet or exceed warranty requirements. While conventional filter materials primarily hold the dirt on the surface of the media, filter material incorporates two layers of fine interlocking fibers that trap particles inside the media as well. These layers are bonded together for high efficiency and capacity performance, to help trap more dirt than conventional, single layer elements. By removing the maximum amount of airborne contaminants, engine wear is greatly reduced, helping to prolong the life of the engine.