List of featured suppliers of FLUE Blocks Gas Appliance on Building Products Index
A flue is a passage in a chimney for carrying smoke and gases away from a fire or furnace. Blocks refer to solid pieces of building material, often made of concrete, used for constructing walls, foundations, or other structures. A gas appliance is a device that runs on natural gas or propane, such as a furnace, stove, or water heater.