This Truss Dock Frame is a system using 1½" x 1½" x 3/16" angle and 1/2" round bar that make a rigid system. The pre-punched holes make it easy to bolt sections together with 1/2" x 1½" bolts. A punched system on top allows a nailer strip to be bolted to the top frame and decking can then be nailed or screwed to this nailer. All frames are hot dipped galvanized after welding. Frames can be punched ungalvanized for the do-it-yourselfer that want to paint it themselves. Our frames are 10' in length and 12" high and come in 2'-3'-4'-5'-6'-8' widths. Special custom sizes are also available. Hinges, pipe holders and other accessories are available.