Buyers Products Black Steel Underbody Truck Box w/Stainless Steel Door (18x18x36 Inch) Dimensions: 18"(H) x 18"(D) x 36"(W) - # Latches: 1 Durable construction with a 14 Ga steel body and 14 Ga stainless steel door. Corrosion-resistant black powder-coated finish and polished stainless steel drop door. Protect against weather and theft with the locking, die cast compression latch. Can be mounted on either a flat surface or under-bed.