I bought it direct from MicroAir. There was a SKU number difference between the one I bought and the one that I think the LOA store has and I don’t know what the difference is between the two. When I went to MicroAir’s website, they have a selector helper and it came up with the one I bought (single zone Coleman-Mach/AirXcel replacement), even had a picture of my particular thermostat on the page). I suspect that it’s probably not a big difference, it may only be the one that I bought included a wiring harness, which I couldn’t use (I gather some Coleman-Mach thermostats have wiring harnesses). That’s not a big deal, just remove the harness from the thermostat and install the trailer’s wires into the appropriate holes in the new thermostat. I wish that Lance HAD used a wiring harness, it would have made things a lot easier.