Stealth CS25 Concrete Composite Burglary and Fire Safe

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External Dimensions 25"H x 20"W x 20"D
(Add 1 ½” to D for Handle)
Internal Dimensions 20"H x 15 ¼"W x 13"D
Int. Cubic Ft 2.3 cu ft
Weight 465 lbs


  • Built to Similar Construction Standards as a TL-15 Rated Safe
  • 90 Minute Fire Rating at 1200º F
    • Heat Expandable Door Seal for Extra Fire Protection
  • Total door thickness of 4 ½"
    • Including a 2" defense barrier of outer & inner steel plates totaling 9 gauge, encasing concrete composite fill consisting of high-grade cement, high strength adhesives, superplasticizer, fire-proof material and coal ash
  • Overall Body Thickness of 2 ¼"
    • Including Concrete Composite Filling encased in Outer & Inner Steel Plates (Total of 9 Gauge Steel thickness)
  • 6 Solid Steel Locking Bolts 1 ¼” in Diameter
  • UL Approved High Security Electronic Lock
    • Protected by Hard Plate & Internal Re-Locker
  • 2 Pre-Drilled Bolt Down Holes to Secure Safe Down
  • 2 Adjustable/Removable Shelves
  • Extremely Durable Armored Black Paint
  • Chrome L-Shape Turn Handle
  • Outer Steel Escutcheon Plate
  • Lifetime Burglary & Fire Warranty
    • Covers Break-In, Attempted Break-In & House Fire
  • 2 Year Parts & Labor Warranty


Starting with security, the CS25 Stealth Concrete Composite safe has a total door thickness of 4-1/2" making it nearly impossible to pry open. Both the door and the body have a 2" defense barrier of both an outer and inner steel plate totaling 9 gauge, with a concrete composite fill in the middle consisting of high-grade cement, high strength adhesives, super-plasticizer, fire-proof material and coal ash. Traditional home and office safes will have an outer steel shell with gypsum fireboard in the middle that is extremely easy to drill through. Concrete is incredibly difficult to drill through which is why it's used on bank vaults and TL Rated Safes. With the Stealth Concrete Composite Safes you get similar security features found on TL Rated Safes without the massive price tag.

Keeping the massive door locked in place are 6 solid steel 1-1/4" thick locking bolts, with three being active and three deadbolts on the hinge side. The door opens on two external heavy-duty steel strap hinges after the correct combination is entered into the UL Approved NL Universal Lock UR-2020 High Security Electronic Lock. This lock is the most reliable lock in the safe industry assembled and tested in the USA. The lock is also protected by an outer steel escutcheon plate, internal hard plate and re-locker that provides another barrier to a drill attack.

Stealth CS25 Concrete Composite safe is fire rated for 90 minutes at 1200 degrees with the fire resistance provided by the concrete fill. Concrete is the best fire resistance material and if you take a look at all the safes that have passed the UL fire tests, all of them use concrete. Stealth also adds an intumescent door seal that expands to multiple times its size during a fire to prevent smoke from entering the safe keeping your contents safe and secure inside.

The Stealth CS25 Concrete Composite Safe is finished in an extremely durable black finish with a chrome drop down handle and steel plate. What really differentiates this safe from the competition is the interior shelving and backplate. The finish makes this safe ideal for home, office or commercial use.

Stealth believes in and stands behind the CS25 concrete composite safe by offering a 2 year parts and labor warranty on the lock and defects in materials and workmanship and a lifetime warranty against house fire, attempted break-in and actual break-in. If you want similar security and features of a TL Rated safe at less than half the price, you've just found your perfect safe, the Stealth CS25 Concrete Composite Safe.

What Does Concrete Composite Mean?

The Door & Body have a 2" defense barrier consisting of 9 Gauge Total Thickness of inner & outer Steel Plates, with Concrete Composite Fill in the middle.

The Composite consists of High-Grade Cement, High Strength Adhesives, Superplasticizer, Fire-Proof Material & Coal Ash.

What a 90 Minute Fire Rating Really Means?

This safe was tested at 1200º F for 90 minutes straight with the internal temperature never passing 350 degrees Fahrenheit. The safe comes with concrete fire protective material in the door & body, PLUS a intumescent door seal that will expand to multiple times during a fire to protect smoke and water from entering the safe.

It is important to note that a house fire typically burns for about 20 minutes at approx. 1100-1200º F. Paper & documents will burn at approx. 450º F.

UL Listed Electronic Lock:

The NL UR-2020 Electronic Lock is an extremely reliable lock that is assembled and tested in the USA. The lock is drill and punch resistant due to its added layers of security just on the lock.


✓ UL Listed Electronic Device
✓ Customizable 6-Digit Code
✓ External Battery Compartment
✓ Low Battery Indicator
✓ Combination Memory (code stays set even if battery is changed)
✓ 1/4" Thick Steel Hardplate (protects against drill attacks)
✓ Internal Relocker (protects against punch attacks)
✓ Assembled & Tested in the USA
✓ Chrome External Keypad

Interior Features

Adjustable Shelving & More

The interior of this safe comes with a gray powder-coated shelf that can be removed
or adjusted to best fit your needs.

✓ 2 Gray Powder-Coated Shelves (Adjustable/Removable)
✓ Matching Interior Gray Door Plate
✓ 2 Bolt Down Holes (Hardware Included)

Additional Features

Important Documents & Instructions:


How to change the combination on Stealth Safes:

How to change the Battery NL UR-2020:

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