Used Crown Royal 7300 outdoor boiler for sale. This outdoor wood furnace is capable of heating up to 5,000 square feet and is made of high quality 409 titanium enhanced stainless steel. The fire box is rounded so you'll get a more complete burn because as the wood in the bottom burns, the sides will cave in onto the fire. It also features a light for loading at night and an easy access rear door. Comes with a three foot insulated chimney. We're asking $4,500.