Our kit docks consist of a modular 12" angle iron box truss, hot dipped galvanized substructure. Standard sizes are 2',3'or 4' wide and 4' to 20' in length, with 4' cross sections. All frames are bolted together using 1/2" galvanized bolts. The superstructure consist of 2 1/2" galvanized square tubing and 8"galvanized Z purlins. All dock components are delivered pre-drilled and test fitted to ensure easy installation.