model name / number:GRADE1 SZ4 CLASS NT FIRE 017-60
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Description
Manufacturer: Chubbsafes
Model Range: Sovereign
Security Grade: Grade 1 (European burglary resistance classification under EN 1143-1).
Grade 1 safes are suitable for protecting cash, documents, and valuables against professional attack.
Size: SZ4 (Size 4) – one of the larger models in the range.
Fire Rating: NT Fire 017-60P – certified to protect paper documents for 60 minutes in a fire test. The internal temperature remains below the level at which paper chars during the certified fire exposure.
Construction: Multi-wall steel body with fire-resistant barrier material and anti-drill/anti-attack protection. Similar Chubb Grade 1 safes use composite barrier materials and certified locking systems.
Typical Size 4 Specifications
For the Sovereign Size 4 model:
External dimensions: approximately 1208 × 668 × 773 mm (H × W × D)
Internal dimensions: approximately 1040 × 550 × 533 mm
906 kg suggests is a high-capacity Sovereign Grade 1 safe with enhanced fire protection, substantially heavier than standard Grade 1 safes of similar external size. The additional weight comes from the composite barrier and fire-resistant fill material between the inner and outer steel walls.