Dual Gradient depth filtration is achieved with our technically advanced die system. This design allows us to create two distinct filter zones. Larger particles are trapped and filtered out in the first zone, and the smaller particles are trapped in the second zone.
The tighter matrix of the inner zone also provides exceptional strength and functions as a self-supporting core, eliminating the need for a separate center core.
The Dual Gradient design allows for optimum dirt-holding capacity and minimal change-outs.