Raptor Service Kit 5:1, 10:1 Heat Only, Includes: 3003 Compartmented Box, Phantom Sensor Kit Lable, Generic 2x4 Label, Return Sensor, Flue/Blocked Drain Sensor, Supply Sensor, Flame Sensor Kit, Igniter Repair Kit, Flue Sensor Assembly, High & Low Voltage Fuse Kit, Gasket Flange Diameter: 2 9/16", || RAPTOR SERVICE KIT