871 Basement Concrete Block Walls

Enter the percentage of the basement that has concrete block walls. Use this component if you do not know the thickness of the walls. Use component 872 (Basement 6" Concrete Block Walls), 863 (Basement 8" Concrete Block Walls), 864 (Basement 10" Concrete Block Walls) or 865 (Basement 12" Concrete Block Walls) if you know the thickness of the walls.