Gribben Stockyards manufacture two sizes of steel stock grids:-

• 4.0m x 2.0m - which meets '92 Ausroads bridge design code T44, suitable for highway installation. (weighs approx. 1.2 tonnes with wings).
• 3.2m x 2.0m - a lighter grid suitable for normal farm duty. (weighs approx. 0.9 tonnes with wings).

These stock grids:-

• are available hot dip galvanized or non galvanized;
• with or without wings (the wings are detachable);
• are set into concrete footings when installed (the specifications of the footings are provided).

Engineering computations are available with the T44 heavy-duty grid.