I would like to introduce my new stove, being much bigger than the other models (see pics) comes with a uprated damper valve and a heavyweight spark arrestor and also 4 straight sections. fire box is @ L 40x W23 x H20 cm, I would rate it at approx 3.5KW and above. high temperature carbon steel. please don't hesitate to ask questions, I have all the accessories you need for your project, exit kits are available and I can also custom build you a kit. I combine postage when possible, cheers. due to the nature of the product no returns allowed if used