Like new Tankless Water Heaters, never used before. I bought this unit from a discount store. It was a good deal, so I bought it thinking I was going to download, but I changed my mind. It's in a brand new condition and there's a new guarantee.
It's propane now, but there's a natural gas adapter, part number 104000216. It's still in the box, but the box is beaten up and taped up when I bought it this way.
This is a 199,000 btu internal propane module.