The foldable wire mesh cage is welded from strong wire with bottom U-shape reinforcement. It folds, accepts swivel casters, looks good, is sturdy, moves easily, and carries heavy loads. It stacks up to four layers for three-dimensional storage. It is used widely in manufacturers and large warehouse supermarkets. The galvanized surface looks good, resists oxidation, lasts long, stays hygienic, and keeps turnover, storage, and recycling pollution-free. International-standard dimensions pair with shipping containers, easing export shipments. First-time buyers: send your working conditions — cargo weight, stacking layers, wheels or not, racking or not — and we recommend the model; do not guess sizes yourself.