Designed to safely store and transport your most delicate equipment in the most severe and hazardous environments, these cases meet the highest quality levels and comply with military and commercial standards of testing. Their thick plastic resin housing provides exceptional resistance to impact, corrosion, water and dust.Watertight Neoprene sealPressure valve quickly adjusts internal pressure in case of sudden changes in height or temperatureErgonomic handles and strong pressure locks that can be padlockedInterstackable (even if different-size models) Internal fitting for metal supports to set up panels or masks for attachment of tools and equipmentDiced-foam insert with each case for custom storage and protection.Interior Dimensions (W x H x D) 44.5 x 34.5 x 19 cmExterior Dimensions (W x H x D) 47 x 41.5 x 21 cmWeight: 4.5 kg