Sensitive equipment needs protection, and since 1976 the answer has been the Pelican Protector Case. These cases are designed rugged, and travel the harshest environments on earth. Against the extreme cold of the arctic or the heat of battle, Pelican cases have survived. Made in the USA, these tough cases are designed with an automatic purge valve, that equalizes air pressure, a watertight silicone O-ring lid, over-molded rubber handles and stainless steel hardware. Strong polyurethane wheels with stainless steel bearings Easy open Double Throw latches Open cell core with solid wall design - strong, light weight O-ring seal Pelican 1660AB Large Case with Foam - Black has Automatic Pressure Equalization Valve Comfortable rubber over-molded top and side handles Stainless steel hardware and padlock protectors Lifetime Guarantee of Excellence External Dimensions: 80.2 x 58.4 x 49.5 cm Internal Dimensions: 71.6 x 49.9 x 44.8 cm Weight: 19.12kg Inc Foam; 15.49kg No Foam Specifications Dimensions Interior (L×W×D): 71.6 x 49.9 x 44.8 cm Exterior (L×W×D): 80.2 x 58.4 x 49.5 cm Measurements Lid Depth: 8.9 cm Bottom Depth: 35.9 cm Total Depth: 44.8 cm Int Volume: 0.16 m³Padlock Hole Diameter: 8 mm Weights Weight With Foam: 19.1 kg Weight Empty: 15.5 kg Buoyancy: 165.6 kg Materials Body Material: Polypropylene Latch Material: ABS O-Ring Material: Polymer Pins Material: Stainless Steel Foam Material: 1.3 lb Polyurethane Purge Body Material: ABS Purge Vent Material: 3 Micron Hydrophobic Non-Woven Temperatures Minimum Temperature: -40° F (-40 ° C) Maximum Temperature: 210° F (99 ° C) Others Wheels: 4 Extendable Handle: yes ApprovalsCertifications: IP67 / STANAG 4280 / Def Stan 81-41