Suburban Furance supply line question

Was hoping someone could tell me what fittings on the supply line to a Suburban furnace. I have not removed the furnace yet. It’s about a 20 mile drive if I need propane fittings versus NPT. I have to go in direction of fitting store today. If threads are NPT, no problem. But if the supply line are those propane threads maybe I can pick them up today. I’m trying to combine a trip. Was originally planning project for next week but have to travel in direction of propane fitting store today.



Question… is the supply line NTP or is the supply line those weird propane fittings?