Warehouse Overhead Door Projects Overhead Door Standardisation for a 3PL Network China Project reference: Overhead Door Standardisation for a 3PL Network. Customer Challenge A logistics operator ran five warehouses with mixed door types, complicating maintenance and spare part management. Our Solution We delivered a standard door specification - same panel, springs and controls - across all five sites, with a shared spare part list. Results Maintenance calls per site dropped and the operator now trains crews once for the whole network.