OEM Orange Push Back Pallet Racking - 4 Deep LIFO High Density Storage System Push back pallet racking is a high density LIFO storage solution. This OEM orange version stores pallets 4 deep in a single lane using nested steel carts that ride on inclined rails, allowing forklifts to load and unload from one aisle while maximizing warehouse cube utilization. Key Features 4 pallets deep per lane with LIFO stock rotation for medium to high turnover goods OEM custom design: frame