The Doepker Steel Tridem is the benchmark single-unit flat deck — all-steel construction at a tare weight that rivals aluminum/steel combo flats of the same spec, without giving up the structural advantage of full steel. At 53' long and 8½' wide on a 4' sliding Hendrickson Intraax suspension, it handles the full range of commercial freight against a 37,500 kg GVWR. The 100% cold galvanization zinc exterior, PPG epoxy primer and heat-oven-cured urethane topcoat are standard here, not an upgrade.