3/16" ID hose connector •Size: 1.60" W x 2.70" lg. x .80" thk. •PM Service Tip: The OEM recommends replacing the Biological Filter every 6 months or every 500 cycles (whichever comes first). •Also included in: Sterilizer PM Kits (RPI Part #SCK035) and (RPI Part #SCK036 Fits Statim 2000 Serial #2101DK0274 and above