VEVOR Pergola Kit, 4x4 Inch 3-Way Slanted Bracket for 3.5x3.5 Inch Wood Beams in Actual Size, Carbon Steel Pergola Bracket with Screws and Post Bases, for Outdoor Wood Pergolas, Gazebos, Sheds, 8 Pcs
What is the widest maximum length the 4x4 Inch 3-Way Slanted Brackets can be used to assemble? Would 12' work or would that require an additional support in the middle?