My wood burning stove is the popular cubic mini stove. The cubic mini stove model is the "grizzly" and is able to heat a 40' boat, around 250 sq. ft. Punching a hole in the roof proved difficult - I bought a 4" hole saw to puncture the roof and with little success. I would suggest buying a metal blade for a jig saw. I have 4' of flue and a 3" marine cap. Really love the cap!