The ISM ST271916 Super Treasury is a UL TRTL-30x6-rated burglary safe designed for the buyer whose contents warrant the highest commercial defeat resistance available outside a vault. TRTL-30x6 means UL has certified it as safe to withstand a sustained attack for 30 minutes with tools and torches on all six sides: door, top, bottom, and three walls. This is the rating jewelry retailers, banks, and high-value commercial operations specify when a TL-30 or TL-30x6 isn't enough. If you're storing cash, precious metals, fine jewelry, watches, or other irreplaceable valuables at scale, the Super Treasury is the construction class designed for that exposure.
The body and door use a multi-layered structure that combines outer and inner steel plates, reinforced steel bars, and a monolithic casting of Alchronite, ISM's patented torch and drill-resistant composite material. Embedded inside the Alchronite is a layer of ISM's patented anti-penetration alloy grid. The combination defeats torch cutting, drill attacks, and core-drill penetration across the entire safe shell, not just the door.
The locking mechanism uses three-way active boltwork with a double-action locking system, backed by glass plate relocking protection on all locks. The Super Treasury ships with two UL-approved locks: your choice of a mechanical or digital combination lock paired with a high-security key lock. Dual-lock operation means an attacker who defeats one lock still hasn't reached the bolts, and the glass plate relockers fire automatically if either lock is punched or drilled, locking the bolts permanently in place until a locksmith resets the safe.
The Super Treasury combines its burglary protection with a 2-hour fire rating at 1,850°F per ISM's testing. ISM's proprietary Insutex insulation material is built into the safe body to protect the contents during prolonged exposure to high temperatures, the kind of multi-hour burn that turns a commercial robbery into a total loss. The combined TRTL-30x6 burglary rating and 2-hour fire rating make the Super Treasury one of the few commercial safes that genuinely defends against both attack vectors in a single unit.
Inside, adjustable and removable shelves let you reconfigure the interior for cash tills, jewelry trays, document binders, or stock as needed. A pre-drilled hole accepts an optional alarm system connection, allowing the safe to integrate with your existing security infrastructure.
The ST271916 measures 34 inches tall, 26 inches wide, and 28 inches deep on the outside, with 4.8 cubic feet of usable interior space (27 inches tall, 19 inches wide, and 16 inches deep inside). At 1,670 pounds, the safe is heavy enough to defeat unauthorized removal on its own; for permanent installations, it should still be anchored.
Available in four standard RAL finishes: White (RAL 9010), Light Gray (RAL 7040), Anthracite (RAL 7016), and Black (RAL 9005). Optional add-ons include a left-hand door swing at no upcharge (special order), preparation for a movement time-lock at no charge upon request, custom-secured interior compartments, and additional shelves.
The Super Treasury is built to commercial specification, which means lead time, finish, lock configuration, and delivery logistics are best handled directly. If you have questions about whether the ST271916 fits your application, or you'd like to spec a different model in the Super Treasury line, give us a call at 800-207-2259, Monday through Friday, 8AM to 5PM PST. We'll walk you through it.
Features
UL Security Rating
Construction
Bolts & Locking
Locks
Fire Protection
Interior
Capacity & Dimensions
Finish Options
Optional Add-Ons
Handle Note
The ISM ST271916 Super Treasury is a UL TRTL-30x6-rated burglary safe designed for the buyer whose contents warrant the highest commercial defeat resistance available outside a vault. TRTL-30x6 means UL has certified it as safe to withstand a sustained attack for 30 minutes with tools and torches on all six sides: door, top, bottom, and three walls. This is the rating jewelry retailers, banks, and high-value commercial operations specify when a TL-30 or TL-30x6 isn't enough. If you're storing cash, precious metals, fine jewelry, watches, or other irreplaceable valuables at scale, the Super Treasury is the construction class designed for that exposure.
The body and door use a multi-layered structure that combines outer and inner steel plates, reinforced steel bars, and a monolithic casting of Alchronite, ISM's patented torch and drill-resistant composite material. Embedded inside the Alchronite is a layer of ISM's patented anti-penetration alloy grid. The combination defeats torch cutting, drill attacks, and core-drill penetration across the entire safe shell, not just the door.
The locking mechanism uses three-way active boltwork with a double-action locking system, backed by glass plate relocking protection on all locks. The Super Treasury ships with two UL-approved locks: your choice of a mechanical or digital combination lock paired with a high-security key lock. Dual-lock operation means an attacker who defeats one lock still hasn't reached the bolts, and the glass plate relockers fire automatically if either lock is punched or drilled, locking the bolts permanently in place until a locksmith resets the safe.
The Super Treasury combines its burglary protection with a 2-hour fire rating at 1,850°F per ISM's testing. ISM's proprietary Insutex insulation material is built into the safe body to protect the contents during prolonged exposure to high temperatures, the kind of multi-hour burn that turns a commercial robbery into a total loss. The combined TRTL-30x6 burglary rating and 2-hour fire rating make the Super Treasury one of the few commercial safes that genuinely defends against both attack vectors in a single unit.
Inside, adjustable and removable shelves let you reconfigure the interior for cash tills, jewelry trays, document binders, or stock as needed. A pre-drilled hole accepts an optional alarm system connection, allowing the safe to integrate with your existing security infrastructure.
The ST271916 measures 34 inches tall, 26 inches wide, and 28 inches deep on the outside, with 4.8 cubic feet of usable interior space (27 inches tall, 19 inches wide, and 16 inches deep inside). At 1,670 pounds, the safe is heavy enough to defeat unauthorized removal on its own; for permanent installations, it should still be anchored.
Available in four standard RAL finishes: White (RAL 9010), Light Gray (RAL 7040), Anthracite (RAL 7016), and Black (RAL 9005). Optional add-ons include a left-hand door swing at no upcharge (special order), preparation for a movement time-lock at no charge upon request, custom-secured interior compartments, and additional shelves.
The Super Treasury is built to commercial specification, which means lead time, finish, lock configuration, and delivery logistics are best handled directly. If you have questions about whether the ST271916 fits your application, or you'd like to spec a different model in the Super Treasury line, give us a call at 800-207-2259, Monday through Friday, 8AM to 5PM PST. We'll walk you through it.
Features
UL Security Rating
Construction
Bolts & Locking
Locks
Fire Protection
Interior
Capacity & Dimensions
Finish Options
Optional Add-Ons
Handle Note
