that’s not a longhorn. The longhorn didn’t have the door skirts and it has wider sides around the door. I would say it’s a Stillwater but it looks bigger and the Stillwater doesn’t have a warming plate on the fire box. There is very little information online about this era of smokers. Maybe it is a sidewinder.
Interesting. Maybe this is a second model of the longhorn. The original one didn’t have the door skirts, and had a wider area between the sides and the door. I would be interested in seeing that catalog.