Natural to Propane Conversion Kit, This Unit is For Use with Coleman and York Furnaces. This Kit Consists of (1) 17471- Gas Line Pressure Switch , (1) 18095 - Tapped Gas Pipe Nipple, (1) 167246 - Modulating Gas Valve - Red Knob, (1) - 247589 - Kit Installation Instructions, (6) - 18081 - Main Burner Orifices #55, (1) 20491 - Wire Harness, (1) 255649 - Label, Conversion Rating Plate, (1) 255424 - Label, LP Conversion Kit, (1) 255812 - Label, Conversion Kit 90%. Dimensions: 6-2/5" H x 9-4/5" W x 8-7/10" D, Weight: 3.65 lbs.