Streamline (40620250B3B6) 1/4″ OD x 3/8″ OD -1/2″ Insulation, 25′ Length
Mueller Streamline – 40620250B3B6 – 1/4″ OD x 3/8″ OD -1/2″ Insulation, 25′ Length, Mini – Split Line Set. The Streamline 40620250B3B6 is a premium, pre-insulated copper line set optimized for standard-capacity ductless mini-split air conditioning and heat pump systems.