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 Sumter is an island fortification located in Charleston Harbor, South Carolina. Originally constructed in 1829 as a coastal garrison, Fort Sumter is most famous for being the site of the first shots of the Civil War (1861-65). U.S. Major Robert Anderson occupied the unfinished fort in December 1860 following South Carolinaâs secession from the Union, initiating a standoff with the stateâs militia forces.