Check the listing for details. Robinair 100343 Promax Refrigerant Recovery Machine Filter. Condition: New. Listed at 29.97 USD. AUTHORIZED DISTRIBUTOR - WE EXPORT Robinair 100343 Robinair 100343 Filter-Drier, 1/4" MFL x 1/4 MFL for RG3, RG6 1/4" Flare Filter for ProMax and MiniMax Units Designed to protect recovery systems from debris and deposits that would normally harm your unit. Large filter capacity provides long life. All steel construction with enamel finish resists corrosion and rusting. Description1/4 inch MFL x 1/4 inch MFL Filter-Drier for use with Robinair RG3, RG6 and other refrigerant recovery machinesDesigned to be placed in line between inlet fitting on AC machine and outlet fitting on manifold gauge setPrevents contamination from entering the refrigerant recovery unit, which reduces the risk of damage to both the unit and the system being servicedIf recovering more than one type of refrigerant with the same recovery machine, a separate filter drier must be labeled and used for each refrigerant type Robinair's 100343 is a 1/4 inch MFL x 1/4 inch MFL Filter-Drier for use with Robinair RG3, RG6 and other refrigerant recovery machines. Designed to be placed in line between the inlet fitting on the AC machine and the outlet fitting on the manifold gauge set. Filter-Drier prevents contamination from entering the refrigerant recovery unit, which reduces the risk of damage to both the unit and the system being serviced. If recovering more than one type of refrigerant with the same recovery machine, a separate filter drier must be labeled and used for each refrigerant type. Sold individually.