$1,664.99
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Short Description: The SKB 4U 20-Inch Deep 3RS Static Shock Rack Case is a military-grade waterproof transport case engineered to protect 19-inch rack-mounted electronics against shock, vibration, dust, moisture, and harsh environmental conditions. Its static shock-mounted rack, rugged LMDP construction, and MIL-STD 810H compliance make it ideal for industrial, military, and broadcast applications.


SKB 4U 20-Inch Deep 3RS Static Shock Rack Case – Rugged Protection for Critical Rack Equipment

Product Summary: Designed for demanding field operations and industrial environments, the SKB 4U 20-Inch Deep 3RS Static Shock Rack Case provides exceptional protection for sensitive rack-mounted equipment. Its static shock-mounted chassis minimizes vibration during transport while maintaining structural integrity for mission-critical electronics.

Available from Atlas Industrial Supply in Houston, Texas, this professional-grade rack case is molded from LMDP Linear Medium Density Polyethylene and exceeds MIL-STD 810H standards. The aluminum rack chassis, eight elastomeric shock isolators, gasket-sealed lids, pressure relief valve, recessed stainless steel hardware, and square-hole rack rails deliver reliable performance in the harshest operating environments.

Key Features

  • 4U static shock rack with 20-inch rail-to-rail rack depth
  • Heavy-duty aluminum rack chassis with integrated shock isolation
  • Meets or exceeds MIL-STD 810H military standards
  • Shockproof, waterproof, dustproof, heat-resistant, and chemical-resistant construction
  • LMDP Linear Medium Density Polyethylene roto-molded shell
  • Eight elastomeric shock absorbers reduce vibration and impact
  • Standard payload capacity of 40–150 lbs
  • Optional factory-installed heavy-duty shock system supports 160–300 lbs
  • Standard 19-inch rack width per ANSI/EIA-310-C
  • 20-inch rack depth (rail-to-rail)
  • Square-hole rack rails support #10-32 US and 6 mm international cage nuts
  • 2-inch gasket-sealed front and rear lids
  • Automatic pressure relief valve
  • Four spring-loaded comfort-grip carrying handles
  • Recessed black powder-coated stainless steel hardware
  • Molded stacking ribs compatible with SKB 3RR, 3RS, and many competitive rack systems
  • Integrated lid hangers and coupling straps
  • Available in Black, Desert Tan, and OD Green
  • Compatible with the optional SKB 3RR-RCB Shock Rack Caster Platform

Recommended Applications

  • Military communications systems
  • Industrial automation controls
  • Broadcast and AV equipment
  • Oil & Gas instrumentation
  • Power generation facilities
  • Telecommunications infrastructure
  • Networking equipment
  • Aerospace and defense electronics
  • Government mobile command systems
  • Industrial field service applications

Technical Specifications

  • Rack Capacity: 4U
  • Rack Depth: 20 in rail-to-rail
  • Rack Width: Standard 19 in (ANSI/EIA-310-C)
  • Rack Type: Static shock-mounted rack
  • Construction: LMDP Linear Medium Density Polyethylene
  • Compliance: Meets or exceeds MIL-STD 810H
  • Shock Isolation: Eight elastomeric shock absorbers
  • Payload Capacity: 40–150 lbs standard; 160–300 lbs optional
  • Front Lid Depth: 2 in
  • Rear Lid Depth: 2 in
  • Front Rail to Back Lid: 24.875 in (63.18 cm)
  • Rail to Rail: 19.75 in (50.16 cm)
  • Rear Rail to Front Lid: 24.75 in (62.87 cm)
  • Product Weight: 36.69 lbs (16.64 kg)
  • Exterior Dimensions: 31.625 × 24 × 13.375 in (80.33 × 60.96 × 33.97 cm)
  • Shipping Weight: 40.36 lbs (18.30 kg)
  • Operating Temperature: -40°F to 180°F (-40°C to 82.22°C)
  • Available Colors: Black, Desert Tan, and OD Green

Note: The 20-inch Deep 3RS Series does not include wheels as standard. Customers requiring additional mobility can use the optional SKB 3RR-RCB Shock Rack Caster Platform. Extended payload shock absorbers supporting up to 300 lbs are available as a factory-installed option.

Why Buy from Atlas Industrial Supply?

Atlas Industrial Supply, headquartered in Houston, Texas, supplies premium SKB rack cases and industrial equipment protection solutions throughout Texas and across the United States. We proudly support Oil & Gas, Manufacturing, Power Generation, Telecommunications, Aerospace, Military, Government, and Industrial Maintenance customers with expert guidance, competitive pricing, and fast nationwide shipping.

Frequently Asked Questions

What equipment fits inside the SKB 4U 20-inch Deep 3RS Shock Rack?

This rack case accommodates standard 19-inch rack-mounted equipment up to 20 inches deep, including networking hardware, industrial controllers, communications systems, AV equipment, and electronic instrumentation.

What is the difference between the 3RS and 3RR Series?

The 3RS Series features a static shock-mounted rack permanently installed inside the case, while the 3RR Series includes a removable rack frame that slides out for easier equipment access.

Is this case waterproof?

Yes. The gasket-sealed lids, automatic pressure relief valve, and roto-molded polyethylene shell provide reliable protection against water, dust, and harsh environmental conditions.

Does this model include wheels?

No. The 20-inch Deep 3RS Series is supplied without wheels. An optional SKB caster platform is available for improved mobility.

What payload capacity is supported?

The standard shock isolation system supports equipment weighing between 40 and 150 pounds. A factory-installed heavy-duty shock package increases capacity to 300 pounds.

Does this rack meet military standards?

Yes. The case is manufactured to meet or exceed MIL-STD 810H requirements for protecting sensitive equipment during transport and deployment.

Can these cases be stacked?

Yes. Molded stacking ribs and included coupling straps allow secure stacking with compatible SKB 3RR, 3RS, and many competitive rack transport systems.

Does Atlas Industrial Supply ship nationwide?

Yes. Atlas Industrial Supply ships SKB rack cases throughout the United States from Houston, Texas, while providing expert technical support before and after every purchase.

California Proposition 65

Warning: This product can expose you to chemicals including carbon black, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.

SKU: 3RS-4U20-22B
SKB 4U 20-Inch Deep 3RS Static Shock Rack Case – Waterproof MIL-STD 810H Rack Transport Case
$1,664.99

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