Feature●Complete Air Filter for ERP25 and ERP50 Rocking Piston Cmpressors -1/4" mpt●New style air filter assembly for the ERP25 & ERP50 compressors. - Use of the ERPF1 filter is preferred for superior filtration and longest life on the compressors seals●Good for sound reductions of 2 to 4 dB●For compressor units up to 7.5 cfm●Provides excellent filtration in areas of fine dustDescription Complete Air Filter for ERP25 & ERP50 Rocking Piston Cmpressors - ¼" mpt New style air filter assembly for the ERP25 & ERP50 compressors. - Use of the ERPF1 filter is preferred for superior filtration and longest life on the compressors seals Good for sound reductions of 2 to 4 dB For compressor units up to 7.5 cfm Provide excellent filtration in areas of fine dust frac14;" mpt fitting