Element-Proof Field Ammo Medium Box - Olive Drab A very Handy Ammo or Accessories case with the benefit of being fully waterproof. The full-length o-ring seal keeps the box airtight to prevent dust and other fine unwelcome objects from entering. This mid-sized storage box is ideal for .50 cal ammo storage, but the element-proof medium field ammo box can hold so much more than that! The water-resistant O-ring seal and brass-bailed latch secure contents to keep dust and water out. Protect .50 caliber ammunition, power tools, electronics with this heavy-duty storage box from the storage experts at Plano. Features:O-ring exteriorLockable13.7 x 7 x 8.7 inches exterior11.2 x 5.5 x 7 inches interior