Floating Surface Adjustable Bracket Sizing Guide Wall Thickness Overhang Length 8" 10" 12" 14" 16" 18" ¾" 8" 8" 10" 12" 12" 14" 2" 8" 10" 10" 12" 14" 16" 3" 10" 10" 12" 14" 14" 16" 4" 10" 12" 12" 14" 16" 16"