3R Series 3221-7 Waterproof Shipping Case

$494.99 494.99

3R Series 3R3221-7 Waterproof Shipping Case SKB Shipping and traveling case is a low profile, mil standard case perfect for transporting flatter items or thinner equipment. The wheels and spring-loaded handle are designed for easy mobility.

Interior Dimensions: 32 x 21 x 7 in.
Exterior Dimensions: 35 x 24 x 9.28 in.
Base & Lid Dimensions: Base: 4.8 in. | Lid: 2.2 in.
Empty Case Weight: 26.6 Lbs.
Wheels: Pull Handled Wheeled

SKB iSeries Case Colors

3R Series 3R3221-7 Waterproof Shipping Case

Roto Military Standard Waterproof Case features rugged duty case shell is UV, solvent, corrosion and fungus resistant – making it a great solution for long-term protection for equipment in transit. The exterior of these SKB 3R cases are accompanied by black powder coated stainless steel hardware to prevent rusting and comfortable spring loaded rubber over-molded handles make for easy transport and shipping for these tough industrial and military standard utility cases.

SKB‘s 3R Series cases are built with superior rotationally molded strength and ergonomic design, and feature an impenetrable, yet lightweight LLDPE shell for maximum impact resistance to withstand levels of punishment in excess of all ATA and military shipping specifications Mil-Std-810 and MIl-C4150J.

  • Rotationally Molded Watertight Cases
  • UV, Solvent, Corrosion, and Fungus Resistant
  • Complete Gasket Seal Provides Waterproof and Dust-Tight Construction (Mil-C-4150J)
  • LLDPE Polyethylene Impact Resistant
  • Automatic Ambient Pressure Equalization Valve (Mil-Std-648C & IP67)
  • Powder Coated Stainless Steel Hardware Helps Prevent Rusting
  • Comfortable, Spring-Loaded, Rubber Over-Molded Handles
  • Pressure Relief – Breather Valves
  • Resistant to Impact Damage (MIL-STD-810F)
  • Stainless Steel Latches and Hinges
  • ATA Rated
  • Built-In Wheels
  • Built-In Pull Handle
  • Million Mile Warranty
  • Proudly Made in the USA
  • Interior Options: No Foam and Pick N Pluck Foam

UPC Code:
3R3221-7B-CW – 789270997400
3R3221-7B-EW – 789270997394

More Information
Brand SKB Cases
SKU 3R3221-7B-Series
Lid Depth 2.2 in.
Base Depth 4.8 in.
Interior (LxWxH) 32 x 21 x 7 in.
Exterior (LxWxH) 35 x 24 x 9.28 in.
Empty Case Weight 26.6 Lbs.
Weight with Foam 30.6 Lbs.
Wheels Pull Handle Wheeled
Handle Rubber Overmolded Handles
Latches Yes
Lockable Lockable
Stackable Stackable
Water Resistance Yes
Color Black
Available Colors Black
Rating ATA Rated
Certifications Mil-STD-810F, MIL C-4150J, IP67, MIL-STD-648C
Max Buoyancy 170 Lbs.
Min Temp. -40 Degrees F
Max Temp. 180 Degrees F
Manufacturing Process Roto Molded
Body LLDPE Polyethylene
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SKB 3R Series Case with No Foam


3R3221-7B-EW – No Foam Interior.
SKB 3R Series Case with Pick N Pluck Foam

Pick N Pluck Foam

3R3221-7B-CW – Case is filled with layers of pre-scored charcoal foam. It is the easiest, fastest method for providing a cut-out for individual items. Best for shipping same items repeatedly. Also known as cubed or diced foam.

Pick N Pluck Foam Guide

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