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New design shown on left in picture

SKB 3I Series Injection Molded Mil-Standard Waterproof Cases are molded of ultra high-strength polypropylene copolymer resin, featuring a gasketed, water and dust tight, submersible design (MIL-C-4150J) that is resistant to corrosion and impact damage. Features a continuous molded-in hinge, patent pending “trigger release” latch system, comfortable, snap-down rubber over-molded cushion grip handle, automatic ambient pressure equalization valve (MIL-STD-648C), resistance to UV, solvents, corrosion, fungus and impact damage (MIL-STD-810F).

SKB changed the latch to our latest model, added the stainless steel lock loop protectors, changed the flange around the case, and changed the hinge and feet area


Waterproof and dust tight design (MIL-C-4150J)

Molded-in hinge for added protection

Trigger release latch system

Snap-down rubber over-molded cushion grip handle

Ambient pressure equalization valve (MIL-STD-648C)

Resistant to UV, solvents, corrosion, fungus (MIL-STD-810F)

Resistant to impact damage (MIL-STD-810F)



  • Shipping Weight: 10.00 lb (4.54 kg)
  • Product Weight: 7.90 lb (3.58 kg)


  • Lid Depth: 1.50 in (3.81 cm)
  • Base Depth: 5.50 in (13.97 cm)
  • Interior Length: 18.50 in (46.99 cm)
  • Interior Width: 13.00 in (33.02 cm)
  • Interior Depth: 7.00 in (17.78 cm)

Interior Cu. Volume: 0.97 cu ft (0.03 cu m)


Color: Black

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3i-1813-7B is a SKB Cases brand product.

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