The 18 Inch by 30 Inch Full Height Door Assembly is a durable and practical solution for underbody storage boxes. Available in smooth aluminum and diamond plate, this door assembly comes with a lock and hinge, making it a secure option for your storage needs. The continual-seam weldments virtually eliminate moisture trapping, cracking, and fatigue, ensuring long-lasting durability. This door assembly fits most 18 inch x 24 inch x 30 inch underbody box makes and models, making it a versatile and reliable choice for your storage needs.