SKB Mil-Standard cases were designed to meet the most demanding shipping conditions.They are roto-molded for strength and durability, airtight and water proof with solid stainless steel latches and hinges that will withstand the most demanding shipping conditions. The 3R Mil-Std. Cases are molded of (LLDPE) polyethylene impact resistant / UV stabilized material and meet or exceed MIL-STD 810 and MIL-C-4150J specifications. The shipping cases are all available with an empty interior while some models are available with: cubed foam, layered foam, padded dividers, and a pull handle with wheels. Most models without a built-in pull handle or tow handle accommodate a field installable caster kit which is sold separately. Select models are available with TSA recognized and accepted locking latches in place of stainless steel padlockable latches. Waterproof and dust tight design (MIL-C-4150J) LLDPE Polyethylene impact resistant UV, solvents, corrosion, fungus resistant (MIL-STD-810F) Pressure relief / breather valves Resistant to impact damage (MIL-STD-810F) NO FOAM, WITH WHEELS SPECIFICATIONS: Shipping Weight 88.00 lb Shipping Note: Must ship via truck. Too large for UPS or FedEx. Please Call to Order \n INSIDE DIMENSIONS Lid Depth 3.5 in Base Depth 20.5 in Interior Length 50.0 in Interior Width 30.0 in Interior Depth 24.0 in Interior Cu. Volume 20.83 cu ft CERTIFICATIONS MIL-STD-810F MIL-STD-C-4150J NO FOAM, NO WHEELS, CASTER KIT SOLD SEPARATELY