This air filter is a two-stage element consisting of prefilter on the outside diameter and pleated polyester as the final stage. The air filter can be used for Ingersoll Rand Type-30 compresssors as well as small rotary screw air compressors. Defends against dust, smoke, oil spray and other airborne contaminants, increasing the lifespan of your equipment. Using this product can prevent harmful contamination present in the ambient air which could potentially cause catastrophic damage to your equipment. REPLACEMENT FOR: CHAMPION INGERSOLL RAND AND MANY OTHER BRANDS REPLACES THE FOLLOWING PART NUMBERS: FE001 P05050A, P05051A, 355-9702, 355-9700, IR416, 4ZJ93, 32170979, 110377E075, ST073907AV