IP67, MIL C-4150J, Def Stan 81-41/STANAG 4280. Supplied empty with foam lining. Peli 1620 Waterproof Equipment Case. Peli 1620 Waterproof Equipment Case. Designed for protecting materials during storage and transportation. Supplied with internal foam support to keep articles safe and secure. Offers an exclusive neoprene O-Ring and double-step latches on the case, which keep it securely closed but are easy to open when needed. Features and Benefits. Automatic pressure equalisation valve Easy-open latches Retractable extension handle Fold down handles Rubber O-Ring seal Stainless steel hardware and padlock protectors 4 layer Pick 'N' Pluck™ foam with convoluted lid foam Solid wall design Strong polyurethane wheels with stainless steel bearings IP 67 (1 m submersion for 30 min). Peli Automatic Pressure Equalisation Valve. Peli Automatic Pressure Equalisation Valve is a one-way membrane that releases built-up air pressure while keeping water molecules out, resulting in a watertight case that is even easier to open. IP rating and what it means. IP rating classifies the degrees of protection provided against the intrusion of solid objects (including body parts like hands and fingers), dust, accidental contact, and water in electrical enclosures. Dimensions. Internal dimensions: 543 x 414 x 319 mm External dimensions: 630 x 492 x 352 mm. Peli Certificates. IP67 MIL C-4150J Def Stan 81-41/STANAG 4280. Application Information. Peli Equipment Cases are the ideal choice to keep your equipment safe and secure. These equipment cases are designed to protect all your materials during storage and transportation. Typical applications include Photography, Testing ; Measure equipment and Video.