Natural to LP or High Altitude Conversion Kit (for USA Application Only). This Kit is for Use with Oxbox Furnaces - J801X (except ULN models), J951X, J952E, J952V/X, J962E, and J962V Models, and Appliances Using Honeywell Gas Valves. Package Contains (1) Kit 396221, (1) Kit 396021, (1) Kit 50033841, (7) 55 Orifice Kit 661055, (7) 56 Orifice Kit 661056, (7) 57 Orifice Kit 661057, (3) 59 Orifice Kit 661059, (3) 60 Orifice Kit 661060, (3) 61 Orifice Kit 661061, (1) Conversion Warning Label, (1) Conversion Information Label, (1) Installation Instructions. Weight: 6.5 lbs