AllNo categories OU/FRC Festo Standard Air Filter & Regulator & Lubricator,... Details OFR/LFR Festo Standard Air Filter & Regulator, MINI, MIDI and MAXI... Details OR/LR Festo Standard Regulator, MINI, MIDI and MAXI type, port size... Details OF/LF Festo Standard Air Filter, MINI, MIDI and MAXI type, port size... Details OL/LOE Festo Standard Lubricator, MINI, MIDI and MAXI type, port size... Details