Seahorse SE710 Protective Case with Foam and Plastic Lock (Gun Metal Grey) Seahorse Exterior Dimensions: 20.10" x 15.53" x 5.30" - Interior Dimensions: 18.30" x 13.20" x 4.07". Case weight: 7.16 lbs. Watertight, Airtight and Crush Resistant protection for your valuables. Customize your internal space to fit snugly around your items with the included pre-scored Accuform Foam. Includes non-corrosive keyed plastic locks.