Applications DuraPlus Chimney is a triple wall, all fuel chimney for use with wood stoves, fireplaces, furnaces, boilers, stoves, ranges, water heaters, or other appliances fueled by wood, oil, coal, or gas..What’s the difference between Fireplaces and Fireplace Inserts? There is a lot of confusion about these terms. After all, a “fireplace” ought to be any place you can have a fire, right?.Below are liner sizing charts gas oil appliance liners Choosing a Diameter for non round chimney liner. This chimney liner sizing chart will help you find the dimensions of ovalized, squarized, and rectangularized chimney liner..Don Park is a proud supporter of Habitat for Humanity, throughout the year we incorporate fundraising and awareness into all our events. For more information on Habitat for Humanity visit their website at habitat.ca..