One of the fire safety features of double-wall Type B gas vent is that its outer wall, insulated by the airspace beneath it, requires only 1â clearance to combustible material in the structure.
Fort Mill, also known as Fort Mill Township, is a town in York County in the U.S. state of South Carolina. It is a suburb of the city of Charlotte, North Carolina and is located north of Rock Hill.
Fort Mill's Confederate Park contains the nation's only monument to African-American slaves who fought on the Confederate side of the Civil War. Rock Hill is the largest city near Fort Mill. Here is a map of the Rock Hill area.