
FireKing 4-2131-CSF 4 Drawer Legal Safe In A Fire File Cabinet
Price: $5,282.75
- Fire Rating: 60 mins UL (Underwriters Laboratories)
- External Dimensions: 52.75"H x 20.81"W x 31.56"D
- Internal Dimensions: 10.38"H x 15.25"W x 26"D
- Cubic Inches: 2.38 cubic feet
- Weight: 698 lbs
VERIFIED PROTECTION RATINGS:


UL 1-Hour Class 350 fire file with a concealed safe
Built for offices that file legal-size records and need to lock away valuables, the FireKing Safe-in-a-File Vertical Cabinet (Safe-in-a-File series) carries a UL 1-Hour Class 350 fire rating plus a 1/2-hour ETL digital-media rating on the file drawer, and conceals a fire-resistant safe behind a false top panel. Built in the USA.
This is the four-drawer legal-width configuration, standing 52.75 inches high by 20.81 inches wide by 31.56 inches deep and weighing 698 pounds. Each drawer holds legal hanging folders across a 26-inch-deep, 15.25-inch-wide, 10.38-inch-high interior, giving four full filing drawers plus the hidden safe compartment.
Engineering & Security
- Concealed Safe-in-a-File compartment: A fire-resistant safe hides behind a false top drawer panel, separating cash, jewelry and valuables from everyday filing.
- Medeco high-security key lock: UL-listed Medeco key locking resists picking and unauthorized access to the cabinet and the concealed safe.
- 14-gauge welded steel wire lattice: Insulation is encased in a galvanized 14-gauge welded steel wire frame for structural integrity under fire and impact.
- Insulated independent drawers: Each drawer functions as its own insulated container, so protection holds even when other drawers are open.
- Field-replaceable steel panels: Exterior panels can be swapped individually, restoring appearance without replacing the entire cabinet.
- Not burglary-rated: This cabinet carries fire and media certifications; it is not tested to a UL burglary tool-attack rating by design.
Fire Protection & Interior
- UL 1-Hour Class 350 fire rating: Underwriters Laboratories certifies one hour of protection keeping interior temperatures below 350°F to safeguard paper records.
- 1700°F furnace exposure test: UL testing subjected the cabinet to one hour of exterior fire at 1700°F without exceeding the Class 350 interior limit.
- 2000°F explosion and 30-foot drop: The unit also passed a 2000°F explosion test and a 30-foot impact drop to verify structural integrity.
- ETL 1/2-hour media rating: The file drawer is ETL-verified to a half-hour digital-media standard, protecting disks and drives from heat damage.
- 100% gypsum insulation: Solid gypsum fill draws moisture into a protective vapor when heated, shielding contents during fire exposure.
Drawer Layout & File Capacity
- Four legal-width drawers: Four full drawers accept legal-size hanging folders, suiting law offices, accounting firms and records-heavy departments.
- 26-inch-deep drawer interior: Each drawer measures 26 inches deep by 15.25 wide by 10.38 high, holding front-to-back hanging files.
- Maintenance-free suspensions: Drawer suspensions run smoothly without service, and surface-mounted pulls add insulation by avoiding cut-outs in the drawer face.
Ideal Buyer & Use Cases
This four-drawer model fits businesses that need substantial legal-file capacity alongside a concealed safe for cash and small valuables, all under UL 1-Hour Class 350 fire protection. At 52.75 inches tall, 20.81 wide, 31.56 deep and 698 pounds, it anchors an office filing area while keeping sensitive items out of sight.
If you need less filing space, the 2-2131-CSF (two-drawer) and 3-2131-CSF (three-drawer) configurations share the same fire rating, drawer dimensions and concealed safe in a shorter, lighter cabinet.
Fire Rating
60 mins
Fire Certification
UL (Underwriters Laboratories)
Fill Type
Fire-Resistant Material
Made In
USA
Lock Type(s)
Electronic, Mechanical, Key
Location
File Cabinet
Total Body Thickness
0.1875 inches
Total Door Thickness
0.25 inches
Total Steel in Body
0.1875 gauge
Total Steel on Door
0.25 gauge
External Depth
31.56 inches
External Height
52.75 inches
External Width
20.81 inches
Weight
698 lbs
Internal Height
10.38 inches
Internal Width
15.25 inches
Internal Depth
26 inches
Cubic Inches
2.38 cubic feet
Fire Rating
60 mins
Fire Certification
UL (Underwriters Laboratories)
Fill Type
Fire-Resistant Material
Made In
USA
Lock Type(s)
Electronic, Mechanical, Key
Location
File Cabinet
Total Body Thickness
0.1875 inches
Total Door Thickness
0.25 inches
Total Steel in Body
0.1875 gauge
Total Steel on Door
0.25 gauge
External Depth
31.56 inches
External Height
52.75 inches
External Width
20.81 inches
Weight
698 lbs
Internal Height
10.38 inches
Internal Width
15.25 inches
Internal Depth
26 inches
Cubic Inches
2.38 cubic feet









