Gemstar Stronghold SH3521-0703 Protective Hard Case

Stronghold durable cases are Gemstar's most robust container choice. They are roto-molded, double-walled, airtight and watertight. These long-life reusable containers are built tough to meet your most extreme applications and protect your high-value assets.

Stronghold SH3521-0703 case has an interior dimension of 35.3 x 21.6 x 11.2 in., an exterior dimensions of 39 x 24.9 x 13.3 in., a lid depth of 3.8 in., and a base depth of 7.4 in.

Gemstar hard cases are proudly designed, engineered, and manufactured at a state-of-the-art facility in Cannon Falls, Minnesota. Here, every hard case is built for the long haul to our customers’ exacting specifications, for superior quality inside and out.

STRONGHOLD Cases from Gemstar offer MIL-STD durability and airtight protection for high-value cargo. Featuring rotationally-molded double walls and thick corners STRONGHOLD is the choice for rugged, versatile and dependable protection. These cases are designed and tested to meet or exceed MIL-STD 810G and Military LLRC standards.

If STRONGHOLD can be trusted for use on NASA’s Mars Rover Mission, it can be trusted for transport of your mission critical equipment. Stronghold cases are the toughest roto-molded cases on the market. This case provides the ultimate protection in the most rugged terrain. Extreme durability, interlocking stackability, and airtight protection for heavyweight cargo. When you need to ensure the protection of larger and heavier equipment, STRONGHOLD delivers.

Gemstar Stronghold hard cases are relied upon by military, aerospace, aviation, medical device, industrial, and commercial customers for their quality, precision, and ability to be customized to meet a specific need. Manufactured with Gemstar’s exclusive robotic rotational molded process, Stronghold double-walled hard cases are airtight, watertight, and built to last years of use.

The Stronghold SH3521-0703 case is suitable for heavy-duty applications, such as reusable shipping containers and instrument housing. This case has been used by the US military, all around the world, in all types of conditions. All hardware is stainless steel, and each case comes standard with a pressure relief valve. All sizes are available in a wide range of colors and with an option for further customization. Custom tooling options are also available to meet your size requirements.

Stronghold cases meet military standards for long life reusable containers. These cases feature a unique arrow design on the lid and bottom. This feature allows the cases to be stacked and interlocked together to add stability for transport and storage.

STRONGHOLD cases are guaranteed for life because we ensure your case is built right the first time. If your case breaks or is defective, we will provide replacement parts, repair the case, or replace the case at no cost to you. The result is that STRONGHOLD cases perform to meet the highest standards—yours.

Maximum security means maximum peace of mind. Whatever valuable assets you have stay safe, dry, and secure in these heavy duty, ultra-rugged, ultra-secure, double-walled hard cases. Built to be virtually indestructible. Stands up to edge drops, lateral impacts, vibrations, extreme temperatures, moisture and everything else that you can throw at it. Made with GSR high-performance resin. With over 100 sizes and configurations, and growing, you won’t find any protection stronger than this.

• Rotationally Molded, Double-Walled Durability
• Airtight, Waterproof and Dustproof
• Interchangeable Bases and Lids in the Series
• Recessed, Heavy-Duty Black Stainless Steel Hardware
• Spring-Loaded Bail Handles
• Interlocking, Stackable Design
• Tongue and Groove Construction with Gasket
• Automatic Pressure Relief Valve
• Non-Water Pooling Design, Even When Inverted
• Military Grade Certification
• Meets or Exceeds MIL-STD 810F and Meets Military LLRC Standards
• Guaranteed Performance
• Proudly Made in the USA

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Customizable Options

The single greatest feature about Stronghold cases are the ability to customize features inside and out to ensure proper protection your valuable assets. With countless interior and exterior customization options, These cases are tailored to meet your project’s exact specifications. We will partner with you to identify the best solution for your application, ensuring that the finished cases will provide superior functionality, protection, and durability. Custom options include custom foam inserts, thermoformed inserts, shock mounts, literature pockets, mounting flanges and brackets, automatic pressure relief valve, custom colors, hinged compartments, case wall cutouts, name plates, mold-in graphics, stencil marking, removable lid and more. At GEMSTAR, customization means the STRONGHOLD case built for you is engineered from the inside out to fit your purpose. Rest assured your custom case protects, organizes, and safely transports your valuable assets.

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CUSTOMIZE THIS CASE

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INTERIOR CUSTOMIZATION:

• Custom Foam (PU - Polyurethane, PE - Polyethylene, EPE -Expanded Polyethylene, EPP -Expanded Polypropylene, XLPE -Cross-linked, and Anti-Static)
• Elastomeric Isolator Mount
• Wire Rope Isolator Mount
• Panel Mounts
• Shock Mounts
• Thermoformed Plastic Inserts
• Custom Removable Foam Trays
• Hook-And-Loop Straps
• Mounting Flanges and Brackets
• Compartment Labeling
• Hinged Compartments
• Literature Pockets
• And More

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EXTERIOR CUSTOMIZATION:

• Removable Lid
• Hinged Lid
• Casters
• Bottom Casters
• Retractable Extension Handles and Wheels (Available on select models)
• Extra Handles
• Spring-Loaded Bail Handles with Full Hand Grip
• Lockable Padlock Holes and Brackets
• Forklift Bash Plates
• Forklift Feet
• Stock and Custom Colors
• Standard and Custom Stenciling
• Electronic Humidity Sensor
• Humidity Indicators
• EMI Shielding
• Custom Routing
• Stainless Steel Hardware
• Identification Plates
• Desiccant Holders
• Cutouts
• Automatic Pressure Relief Valve
• Recessed Hardware
• Mold-In Graphics
• Label Plates
• Straps
• And More

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PROVEN TOUGH: STRONGHOLD cases through rigorous tests meant to emulate real-world conditions. These cases are engineered to provide the ultimate protection.

• Drop and Impact
• Vibration
• Immersion
• Handle Pull
• Salt Fog Chamber
• UV Stability
• Wheel Endurance
• Loose Cargo
• High/Low Temperatures
• Water Submersion
• Wind Blown Rain
• Fungus Growth
• Low Pressure
• Wind Blown Sand and Dust

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CERTIFICATIONS:

STRONGHOLD cases will meet or exceed the following standards:

• IP67
• DEF Stan 81-41 / STANAG 4280
• NATO Standard
• MIL-STD-2073-10
• MIL-STD-C4150 J
• MIL-STD-810F
• ATA 300

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Certifications Capable of Being Manufactured to:

• MIL-STD 810
• IP67 – IEC Standard 60529
• ASTM D4169
• ASTM D5276
• ASTM D6179
• ASTM D999 – Vibration
• ATA Specification 300, Category 1
• FED-STD-101 Test Procedure for Packaging Material
• ISTA Test Procedure 1A
• MIL-STD-3010 Test Procedures for Packaging Materials and Containers
• STANAG 4280/AEPP-3 Standard Packaging Test Procedures

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