I have one.Fisher Wood Stoves
The deal is unless it has the UL tag on it the insurance companies don't want it in the insured property. That said, the early models weren't UL listed, most of the existing Fisher stoves out there have the label. Mine has the label on the front of the right side. Bob Fisher designed the stove in response to the fuel "crisis" in the 1970's. Production was farmed out to other manufacturers. They are very well built stoves, but not very efficient. I call mine "the wood hog". Over time other manufacturers began making more efficient stoves, the Fisher stoves more or less became obsolete.
The stove is designed to fit into the existing fireplace and exhaust through the damper. Some time ago I had a flex liner installed which rests on a cast iron bracket sitting on the top of the stove (the insert has no collar). It's a great improvement over an open fireplace, does produce a lot of heat once it heats up. There should be a damper on the outlet, as well as a baffle inside (mine had no baffle, I made one for it, reduced the capacity but made it a bit more efficient). It has a deep firebox which is nice. I have a screen for it if I want to see the fire. There is no blower, it's convection. There are three metal plates that close in the fireplace opening.
The models followed "The Three Bears", Papa Bear, Momma Bear, etc.
It doesn't make any more smoke then any other wood stove in my opinion.