The 18 Inch by 24 Inch Door Assembly is a durable and practical solution for underbody box maintenance. Available in smooth aluminum and diamond plate, this door assembly comes with a lock and hinge, making it a convenient and secure option. The continual-seam weldments virtually eliminate moisture trapping, cracking, and fatigue, ensuring long-lasting performance. Designed to fit most 18 inch x 24 inch x 24 inch underbody box makes and models, this door assembly is a reliable choice for those in need of a sturdy and reliable solution for their storage needs.