Yale YFM420 Fire-Resistant Document Safe
Yale YFM420 Fire-Resistant Document Safe
Key Features
PIN Code
- 1-hour fire resistance — internal temp stays below 150°C in a 927°C furnace (SP & KS certified)
- 4–12 digit PIN — supports over 1 billion possible code combinations
- PIN scramble function — hide your real code within a longer number sequence for privacy
- One-time access codes — grant temporary entry without revealing your master PIN
- 1–48 hour total lockdown — manually suspend all access for extended periods
- External Dimensions: 420mm (H) × 352mm (W) × 433mm (D) | Weight: 36kg | Volume: 25.3L
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The Yale YFM/420/FG2 is a fire-resistant document safe built for households and offices that need certified fire protection with a larger storage capacity. Dual-certified by both SP (Swedish National Testing & Research Institute) and KS (Korea Standard) for 1 hour of fire resistance, it maintains an internal temperature below 150°C even when exposed to a 927°C furnace — keeping passports, contracts, title deeds, and critical documents intact where an ordinary safe would fail.
Access security is equally robust. A 4–12 digit programmable PIN supports over 1 billion possible combinations, while the PIN scramble function lets you hide your actual code within a longer number sequence — so no one nearby can observe your real code. One-time access codes allow temporary entry without exposing your master PIN, and a silent input mode keeps keypresses inaudible. Enter the wrong code too many times and the safe activates an automatic time-lock; for extended security, a 1–48 hour full lockdown mode can be set manually. An external 9V emergency battery port ensures access even on flat batteries.
The body is built to resist both fire and forced entry. 16mm steel locking bolts secure the door, with 18mm steel dog-bolts reinforcing the hinges against attack. The safe can be permanently anchored using the pre-drilled mounting holes and included fixing bolts — secured to wall or floor for added theft resistance.
- 1-hour fire resistance — internal temp below 150°C at 927°C (SP & KS dual-certified)
- 4–12 digit PIN — over 1 billion possible combinations
- PIN scramble — hide your real code within a longer number sequence
- One-time access codes — temporary entry without revealing your master PIN
- Silent input mode — discreet keypress operation
- 1–48 hour total lockdown — manually suspend all access
- 16mm steel locking bolts — with 18mm steel dog-bolt hinge reinforcement
- External 9V emergency battery port — backup access on flat batteries
- Wall or floor mountable — pre-drilled holes and fixing bolts included
External Dimensions: 420mm (H) × 352mm (W) × 433mm (D)
Internal Dimensions: 320mm (H) × 260mm (W) × 304mm (D)
Weight: 36kg | Volume: 25.3L


| Model No.: | YFM/420/FG2 |
| Protection: | 1-hour fire resistance — SP & KS certified, tested at 927°C |
| Exterior Dimensions (mm): | 420H x 352W x 433D |
| Interior Dimensions (mm): | 320H x 260W x 304D |
| Weight (kg): | 36 |
| Volume (litres): | 25.3 |
| Access Mode: | PIN code |
| Mechanical Keys: | None |
| Power Supply: | 4 x AA alkaline batteries |
| Accessories: | Fixing bolts |
| Warranty: | 1 year |

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