The Pelican 1120 Dry Box is the best waterproof, dust proof, and airtight case on the market! Take your camera on your next water adventure to record the memories, or pack a cell phone for emergencies, and your PDA to stay wired to the real world. Pluck n fit foam allows you to customize your box for all your equipment. ABS structural plastic case is virtually crushproof while the built in O ring sealed pressure purge valve allows for quick equalization after changes in altitude or temperature. The lid O ring and pluck n fit foam are replaceable. Cases guaranteed for life against breakage due to manufacture defects. Dimensions listed are interior measurements. Product Specifications: Inside dimensions: 7 38in. L x 4 78in. W x 3 116in. Outside dimensions: 8 14in. L x 6 916in. W x 3 916in.