Flatbed Semi-Trailer Manufacturer, Flatbed Transport Semi-Trailer Prices, Goose Neck Flatbed Semi-Trailer Weight. 13-meter High/Low Deck Flatbed Semi-Trailer Cargo Deck Height. Customizable sizes: 8.5m, 9m, 9.5m, 10m, 11m, 11.5m, 12m, 12.5m, 13m; Width options: 2.55m or 2.5m. Optional front guard, available in straight beam or goose neck design. Registration nationwide, supports installment payments with zero down.