GLOBAL Mezzanine Racking can be designed as single or multi-tier systems, typically 2-3 layers, to maximize space utilization at the top and bottom. Freestanding mezzanines support their weight and load with columns, not needing structural reinforcements. They come in various configurations, often modular, with floor options including solid, perforated, flat, corrugated, or grille. These are widely used in warehouses.