Wooden Hot Tub Heater

Wooden Hot Tub Heater. This woodfired heater sits in the hottub and is secured by 4 fixings (in picture). Box is water tight and comes with 600mm flue pipe. It heated my wooden hot tub to +40c in about 7 hours (does require a lot of wood). Didn't look after my tub and it has rotted in many places so selling the heater.

Please this is ONLY the heater. It sits in the tub NOT outside. Due to size and weight collection only but could deliver for fuel cost please ask.