These Goodman High Temperature Drain Pans are for use on evaporator coils installed with an oil furnace. Oil furnaces burn hotter than natural gas or liquid propane furnaces (over 300 degrees F) which would melt the standard plastic drain pan included with Goodman evaporator coils. Because of this melting hazard, the standard drain pan must be removed from the evaporator coil and replaced with this high temperature one.