
SentrySafe T6-331
Score: 88/100Vaultek MX Series
Score: 88/100Rankings

The SentrySafe T6-331 is an extra-large, floor-mounted steel safe designed for home or office use, offering ETL-verified fire protection for 30 minutes at 1400°F and water resistance for 72 hours at 12 inches deep. It features a programmable digital keypad, California DOJ certification for firearm storage, and a robust locking system with multiple bolts to deter theft. With a spacious 2.2 cubic foot interior, it is built to protect valuables, documents, and digital media from environmental damage and forced entry.
The Vaultek MX Series is a high-capacity smart handgun safe designed for storing up to eight handguns with modular interior configurations. It features rugged 14-gauge steel construction and advanced ViSN connectivity for remote monitoring, though it requires separate battery purchases. It is best suited for users needing quick bedside or closet access to multiple firearms with smart security features.
| Attribute | ![]() | Vaultek MX Series |
|---|---|---|
12 monthsbest | — | |
30 minutesbest | — | |
1,400 °Fbest | — | |
2.2 cu ftbest | 0.71 cu ft | |
24 inbest | 11.6 in | |
16.1 inbest | 15 in | |
15.4 inbest | 11.5 in | |
| ↓ lower better | 81.57 lbs | 32 lbsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | Vaultek MX Series |
|---|---|---|
Protection & Safety(3) | ||
Warranty Length (months) | 12 months | months |
Fire Rating Duration (minutes) | 30 minutes | minutes |
Fire Rating Temperature (°F) | 1400 °F | °F |
Dimensions & Capacity(5) | ||
Interior Capacity (cu ft) | 2.2 cu ft | 0.71 cu ft |
Exterior Height (in) | 24.0 in | 11.6 in |
Exterior Width (in) | 16.1 in | 15.0 in |
Exterior Depth (in) | 15.4 in | 11.5 in |
Weight (lbs) | 81.57 lbs | 32 lbs |
Build & Materials(2) | ||
Construction Material | Steel | Carbon Steel |
Door Thickness (in) | in | 0.08 in |
Security & Access(2) | ||
Lock Type | Digital | Biometric + WiFi |
Power Source | Battery | Battery (AAA/Li-ion) |
Interior & Usability(4) | ||
Mounting Type | Bolt-down | Bottom/Back |
Interior Lining | Soft | |
Interior Light | false | true |
Code Length (digits) | 5 digits | 4-8 digits |

Products in the top-left offer the best value (high score, low price).

Professional reviewers and editors rate the SentrySafe EF4738E highly, praising its ETL-verified fire and water ratings, DOJ certification, and theft deterrence capabilities. The solid steel construction and multiple locking bolts are highlighted as providing the best protection from forced entry. Editors note that the thicker door and substantial weight enhance security compared to smaller models, making it a top choice for protecting irreplaceable items.
Everyday users rate the product highly, commonly praising its reliable fire and water protection, ease of digital code setup, and spacious organization. Users express confidence in firearm storage and appreciate the pry-resistant design post-installation. Recurring complaints focus on keypad battery issues when unused, the difficulty of bolting down the heavy unit alone, and occasional code glitches requiring resets.
Professional reviewers praise the Vaultek MX Series for its high-capacity modular storage, advanced ViSN app with live tamper and humidity alerts, and rugged 14/12-gauge steel construction.
Everyday users and product pages reflect positive reception for quick access, high capacity for eight handguns, and app monitoring capabilities. Common praise includes the durable build, easy mounting, and versatility for storing EDC items like passports and cash alongside firearms.

Choose the EF4738E for high-capacity protection and water resistance, or the T6-331 for compact valuables and easier handling.