Usually consist of upright frame, beam, rail, shelf, etc. Each shelf handles 1500kg maximum weight. The shelf can be easily rolled out by hand. It is ideal for storage of dyes, fixtures, engine parts, tooling or items that require secure storage with easy access. Items can be loaded or unloaded by overhead crane or windlass or forklift. The shelves will be locked in the extended position for maximum safety. The basic starter unit can be expanded to meet ever-changing storage requirements with add-on units.