Hello! I'm new to the forum but have found many threads educational and of great interest. I am searching for a pellet stove insert for a shallow fireplace in a 1900 farmhouse. The fireplace measures 26" high x 26" wide. The problem is the depth: 13" at the bottom and only 11" deep at the top. Does anyone know of a pellet stove insert that will fit such a shallow fireplace? Thank you!