ISM Used Safes | Super Treasury TL30x6 Burglary Safes

Used safes are one of the smartest investments a business or institution can make when premium security is the goal but budget is a real consideration. First Security Safe is proud to offer our customers the best possible security at a price point that makes sense, and the ISM Super Treasury TRTL30X6 used safes is a shining example.

Where protection for money, documents, guns, and other valuables is concerned, the ISM Super Treasury range of safes is created to deliver reliable operation in any situation, always.

Why Choose Used Safes From First Security Safe?

Buying used safes doesn’t mean compromising on quality. At First Security Safe, each ISM safe that we stock is carefully checked to ensure that it performs just as well as our brand-new models. The ISM Super Treasury series is engineered to such exacting standards that even a pre-owned unit remains among the most formidable safes on the market today.

For banks, jewelry stores, government facilities, and high-value commercial operations, the ISM Super Treasury represents the gold standard, a combination of field-tested engineering and decades of proven performance.

What Makes ISM Safes the Top Choice for High-Security Applications?

Advanced Barrier Material: Alchronite Protection

The most defining feature of ISM safes is the proprietary Alchronite barrier material used in construction. This unique, superior, and advanced torch and drill-resisting barrier defense material was developed specifically to withstand the most concentrated attacks using the most sophisticated burglary equipment available today.

Here’s how it works: a highly torch-resistant cast alloy surrounds a consistently staggered drill-resistant alloy multi-grid. This construction assures a complete barrier with no weak points, not at the corners, not at the edges, and not at the door face.

No matter the angle of attack, the ISM Super Treasury holds firm.

Key Security Features of ISM TRTL30X6 Safes

The ISM TRTL30X6 safes carry a U.L. (Underwriters Laboratories) TRTL-30×6 rating, one of the highest burglary ratings a used safes can achieve. This means the safe is tested against torch and tool attacks on all six sides for a continuous 30-minute period. Here’s a breakdown of the critical security features:

U.L. Group 1 Manipulation-Proof Combination Lock

This lock has been designed to thwart any attempts made using automatic dialers, and is the strongest type of lock that one can use on a combination lock system.

High-Security 9-Lever Key Lock

With two bits and two stems, this key lock provides a second level of access control that makes the task of breaking into the door more difficult.

Glass Plate Protection and Randomly Placed Relocking Devices

In case a burglar breaks the casing of the lock, the relocking devices will be engaged automatically. The glass plate system activates these relocking devices on forced entry.

Protection From Side Attacks on Interlocking Boltwork

The ISM Super Treasury defends every side of the locking mechanism. Attacks aimed at manipulating the boltwork from the sides are defeated by structural design, not just material hardness.

Fire Protection

Beyond burglary resistance, ISM used safes provide meaningful fire protection, critical for businesses that store original documents, media, or irreplaceable records alongside high-value items.

ISM Super Treasury Model Specifications

The sizes of the ISM Super Treasury vary based on their storage capabilities. All sizes come in dimensions where they can pass through doors that are narrow and even the larger sizes are balanced in terms of weight such that they can be transported through normal elevators.

Outside & Inside Dimensions

Model Number	Door Swing Projections	Door Swing Projections (A)	Door Swing Projections (B)	Door Swing Projections (C)
ST-271916		19″	54″	51″
ST-332023		20″	62″	52.5″
ST-442023		20″	62″	52.5″
ST-552023		20″	62″	52.5″
ST-642617		26″	62″	64″

Understanding door swing projections is essential for installation planning. Our team at First Security Safe can assist you in evaluating your floor plan to ensure seamless placement.

Who Should Consider ISM Super Treasury Used Safes?

The ISM Super Treasury is purpose-built for:

• Financial institutions such as banks, credit unions, and foreign exchange services where vault-like security is necessary without the expense of a vault.
• Jewelry stores and shops need the highest level of security protection due to the value of their merchandise.
• Government agencies, municipalities, etc., requiring secure protection of sensitive files.
• Pharmaceutical establishments where controlled substances need to be stored properly.
• Corporate offices protecting intellectual property, confidential agreements, and physical assets.

If your business operates in an environment where the cost of a breach far outweighs the cost of the used Safes, the ISM TRTL30X6 is the right choice, and buying a certified used unit from First Security Safe makes that choice more accessible than ever.

Why the TRTL30X6 Rating Matters

Not all safes are created equal. Many residential and commercial safes carry B-rated or even RSC (Residential Security Container) ratings, which offer meaningful but limited protection. The U.L. TRTL-30×6 rating places the ISM Super Treasury in an entirely different class.

A TRTL-30×6 safe has been independently tested and certified to resist torch and tool attacks on all six sides for 30 consecutive minutes, the kind of rating that insurance companies recognize and law enforcement recommends for high-risk commercial applications.

When you purchase an ISM Super Treasury used safes from First Security Safe, you’re getting that same certified protection at a fraction of the cost of a new unit.

Contact First Security Safe for ISM Used Safe Pricing

Ready to secure your assets with one of the most respected names in high-security safes? First Security Safe is your trusted source for ISM used safes, including the full Super Treasury TRTL30X6 lineup.

View the ISM TRTL30X6 Catalog or contact us directly for pricing on available ISM Super Treasury models. We are always prepared to assist you to choose the best model suitable for your needs.

View ISM TRTL30X6 Catalog

Contact Us for Pricing About ISM Used Safes.