Hello evrybody! New guy here from TN. I have a pre-fab fireplace, Heatilator Model HD36B, & I am wanting to replace it with a wood burning insert or a wood stove. I am thinking it is too small to use an insert & I will probably have to use a wood burning free-standing stove. I don't have much room for the stove to sit out into the room so I am thinking of doing an alcove. The chimney is a wood framed chimney with double-wall pipe running up through the center. My house is 1500 sq. ft rancher (1 level), & I want to be able to heat with the wood stove. I am enclosing some pics & hopefully I can get some advice on ways that I should try to use the stove. The hearth is about an inch or so thick of artificial stone & it extends from the front of the fireplace out 20". From the hearth to the bottom of wood mantle is 59". Can I use my existing double-wall pipe with a wood stove? After removing my pre-fab, what are some ways to make wood framed chimney non-combustible? I am wanting to retain my wood mantle & I realize I may have to raise it to acquire adequate clearnces for stove. Any help is appreciated. Pics below. Thanks, Kevin Randolph