Cathedral Ceiling Support Box Ceiling Pitch Sizing Chart
DuraBlack / Single Wall Pipe DVL / Double Wall Pipe Use
0/12 to 4/12 0/12 to 6/12 11" Support Box
5/12 to 9/12 7/12 to 13/12 24" Support Box
10/12 to 14/12 14/12 to 20/12 36" Support Box
DuraBlack / Single Wall Pipe DVL / Double Wall Pipe Use
0/12 to 4/12 0/12 to 6/12 11" Support Box
5/12 to 9/12 7/12 to 13/12 24" Support Box
10/12 to 14/12 14/12 to 20/12 36" Support Box
