I have a couple of these dry ammo boxes. I would recommend the use of a Spanish Cedar type humidor over the box, but they make a great small tool box. The size is 12" deep X *" wide and 11" high.
The larger box is 19" deep X 8" wide and 14" high. Both have great seals and I'm sure need humidification devices. I have 2 small and 2 large ammo boxes. I store tools and nails in them. They make great carryons for the truck. Quick load.