The Door Assembly Stainless Steel 18 By 36 Diamond Plated Full Ht With Lock And Hinge is a practical and durable product made of diamond plate aluminum. It is available in smooth aluminum or diamond plated aluminum, and each door assembly comes with a lock and hinge. The continual-seam weldments of this product virtually eliminate moisture trapping, cracking, and fatigue, ensuring its long-lasting performance. Designed to fit most 18-inch x 18-inch x 36-inch underbody box makes and models, this door assembly offers convenience and reliability for various applications.