STAINLESS STEEL UNDERBODY TRUCK TOOL BOX WITH POLISHED STAINLESS STEEL DOOR SERIES - 1702595. 1702595 - 18X18X18 STAINLESS STEEL TRUCK BOX WITH POLISHED STAINLESS STEEL DOOR. Available in a variety of sizes, each professional grade box is made of strong 14 Ga stainless steel with a 16 Ga stainless steel door.