For over 20 years Engineered Shipping Containers has supplied clients across North America with durable, reusable custom designed plywood shipping crates that are virtually indestructible. Each of our products is designed based on specifications provided by our customers, then manufactured in California. No crate or order is too big or too small. Crates use 3/4" heat treated pine plywood. Edges and corners are reinforced with galvanized steel siding, and sit on galvanized steel skids. 7" box style lids are attached with through bolted hinges and lockable hasps.