DECK RACK, or TRUCK DECK, are so-called “deck racks” for trucks and trailers, which are designed to maximize height loading/utilization. For products that have stacking limitations or cannot be stacked at all, this can be used to increase the quantity that can be shipped. It prevents cargo damage and increases the efficiency of truck loading, thus greatly reducing transportation costs. Easy to open and fold, and can be stacked when folded. It can be safely assembled by one person using a forklift. In addition, the height of the legs can be flexibly and easily adjusted to suit the goods and can be fixed at several points.