8-Pack of TOJA GRID Pergola Post Wall/Railing Brackets 4 in x 4 in Wood Posts for Toja Grid Modular Pergola System. Item number G021068MB1. Brand new in box, exactly as pictured. These Toja Grid Knect Black Mounting Brackets are for 4×4 wood posts. Designed specifically for the Toja Grid system, they are easy to install and will ensure a secure and sturdy structure. Ready for immediate shipment. We ship fast! Thanks for looking and we welcome any questions.