Overview The Pelican 1550 Case has a unique design incorporates a sophisticated pressure valve that allows for equal air pressure inside that case, but prevents water molecules from entering. The latch system allows for quick and easy access to the contents and a when closed maintains a tight seal. The case itself is very durable and is constructed with a very tough Co-polymer Polypropylene. Its internal space is 47.3 x 36 x 19.3 cm. The Pelican 1550 external dimensions are 52.5 x 43.7 x 21.3 cm. The case offers a base depth of 14.9 cm and the lid depth of 4.4 cm. A overall weight of just 5.4 kg (with Foam) makes it the light weight case solution you have been looking for. Features Watertight, crushproof, and dust proof Open cell core with solid wall design - strong, light weight O-ring seal Automatic Pressure Equalization Valve Stainless steel hardware Lifetime Guarantee of Excellence Overview 1 x Convoluted Lid Foam 2 x Single Layer of open cell Pick'N'Pluck foam Pick'N'Pluck Foam Height: 6.4cm Pick'N'Pluck Protective Outer Foam Rim: 2.1cm Pick'N'Pluck Prescored Foam Pieces: 1.2cm x 1.2cm on top through to 6.4cm. 1 x Base Foam Base Foam Thickness: 1.9cm Specifications Model # 1550-000-110 External Dimensions 52.5 x 43.7 x 21.3 cm Internal Dimensions 47.3 x 36 x 19.6 cm Internal Lid Depth 4.4cm Internal Bottom Depth 14.9cm Product Weight 5.4 kg Bouyancy 37.1 kg Rated Watertight (IP67 Rated) Temperature Range (-40c) (99c) Lockable Yes Warranty Info Lifetime Guarantee of Excellence NOTE: BULKY ITEMS MAY ATTRACT FREIGHT CHARGES