aFe Power Magnum FLOW Pro GUARD7 Air Filter 4 IN F x 6-1/2 IN B x 6-1/2 IN T (Inverted) x 8 IN HaFe Power Magnum FLOW Pro GUARD7 Air Filter 4 IN F x 6 1 2 IN B x 6 1 2 IN T (Inverted) x 8 IN H This filter features seven layers of composite media for maximum protection. The patented combination of oiled cotton gauze with synthetic material allows this media to thrive in the dustiest and dirtiest environments imaginable. Pro GUARD 7 filters are easily recharged with aFe's POWER CLEANER and gold air filter oil. aFe POWER performance air filters use