O-ring sealed with an automatic pressure equalization valve, these cases are watertight, crushproof, and dustproof. Designed to keep your firearm protected with strong, lightweight open-cell core walls and a three-piece foam set. The foam is not pre-cut so you can cut it to fit your gun. For portability, these cases are equipped with polyurethane wheels and fold-down handles. Interior measures 50-1/2" x 13-7/16" x 5-1/4". Exterior measures 53" x 16" x 6-1/8".