---
product_id: 44265199
title: "Fireproof and Waterproof XX-Large Black Steel Home Safe, DOJ-Certified with Digital Keypad Lock for Guns or Documents, 3.39 Cubic Feet, 27.8 x 21.7 x 19 Inches, EF3428E"
brand: "sentrysafe"
price: "63928843₫"
currency: VND
in_stock: true
reviews_count: 10
category: "Sentry Safe"
url: https://www.desertcart.vn/products/44265199-fireproof-and-waterproof-xx-large-black-steel-home-safe-doj
store_origin: VN
region: Vietnam
---

# Waterproof 72hrs @ 12in depth Digital keypad + hidden backup keys ETL fireproof 1400°F/30min Fireproof and Waterproof XX-Large Black Steel Home Safe, DOJ-Certified with Digital Keypad Lock for Guns or Documents, 3.39 Cubic Feet, 27.8 x 21.7 x 19 Inches, EF3428E

**Brand:** sentrysafe
**Price:** 63928843₫
**Availability:** ✅ In Stock

## Summary

> 🔐 Secure your legacy with fireproof, floodproof confidence.

## Quick Answers

- **What is this?** Fireproof and Waterproof XX-Large Black Steel Home Safe, DOJ-Certified with Digital Keypad Lock for Guns or Documents, 3.39 Cubic Feet, 27.8 x 21.7 x 19 Inches, EF3428E by sentrysafe
- **How much does it cost?** 63928843₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/44265199-fireproof-and-waterproof-xx-large-black-steel-home-safe-doj)

## Best For

- sentrysafe enthusiasts

## Why This Product

- Trusted sentrysafe brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart Digital Keypad Access:** Customizable 5-digit code with lockout after 3 failed attempts plus stealth backup keys hidden behind the keypad.
- • **Rock-Solid Steel Construction:** 163 lbs of heavy-duty alloy steel with 7 locking bolts and bolt-down hardware for maximum physical security.
- • **Unrivaled Fire & Flood Defense:** ETL-verified to withstand 1400°F flames for 30 minutes and 72 hours submerged, securing your valuables against nature’s worst.
- • **Massive 3.39 Cubic Feet Capacity:** Spacious interior fits multiple firearms, documents, and valuables with adjustable shelves tailored to your needs.
- • **Designed for the Responsible Professional:** DOJ-certified for gun storage, combining peace of mind with sleek black finish to complement your modern home or office.

## Overview

The SentrySafe EF3428E is a DOJ-certified, extra-large home safe featuring a robust digital keypad lock and hidden backup keys. Engineered from heavy-duty alloy steel, it offers 3.39 cubic feet of customizable storage space. ETL-verified fireproof protection endures 1400°F for 30 minutes, while waterproofing safeguards contents for 72 hours underwater. With seven solid steel locking bolts and bolt-down hardware, this 163-pound safe delivers uncompromising security for firearms, documents, and valuables, making it the ultimate choice for professionals prioritizing safety and style.

## Description

This high-capacity gun safe, featuring a digital keypad lock, provides an exceptional level of protection for your most valuable items. With a generous 3.39 cubic feet of storage space, this robust safe measures 27.8 x 21.7 x 19 inches, offering ample room for guns, documents, jewelry, money, and other critical possessions. Whether you're looking for a fireproof document box or a secure place to store firearms, this large safe ensures peace of mind. Constructed from heavy-duty steel, this home safe is engineered to withstand life’s unpredictable emergencies. It offers superior fire protection, enduring temperatures up to 1400°F for 30 minutes to ensure that your important documents and valuables remain unscathed. The safe is also capable of surviving up to 72 hours in water without compromising its contents. Rest easy knowing that whether it's fire or flood, you have the best small safe box available on the market protecting what matters most. This versatile mini-safe boasts an advanced digital keypad lock system for ultimate control and convenience while ensuring only authorized access to your belongings. The safe is California DOJ-certified for gun storage.

Review: High Quality, Heavy Duty Safe - Excellent safe - very pleased with this purchase. After looking long and hard for an adequate safe for multiple pistols I own, I came across this safe by chance, and overall, it had everything I wanted. Other safes I was looking at were quite small, looked flimsy, and even though they featured biometric capability, the user reviews left me very unnerved - some being broken into by children, while others being broken into with a firm strike with a fist. I am sure such stories were rare, but the fact that such incidents occurred left me highly wary of making a purchase. Not only is this safe larger than most within this price category, but the door and (4) bolt locking system is very robust. I was very pleased to see how solid and well built everything looked, and the heft / weight of this safe leaves me feeling confident that my firearms will be kept safe from curious children. Some users mentioned the carpeted shelves being flimsy and easy to give way. Yes, the shelves are very basic, but I had no troubles securing them in place with several firearms worth of weight that did not cause them to tilt or break free. Further, they are adjustable, allowing you to place them in differing areas, based upon your storage preferences. The locking mechanism feels very robust and stout - you can feel the (4) heavy duty bolts locking firmly into place, and the door has a nice solid heft to it as well. As for the keypad, it was very easy to program, and is very easy to use with soft push button keypads that allow you to input a (5) numerical code - everything except "00000", which would be ludicrous to use. I prefer this numerical keypad style of entry versus biometrics, as the more I read about biometric access, the less certain I felt. I am sure there are some excellent biometric safes available, but I simply like the basic numerical entry - safe, simple & effective, especially if you need access without fuss & bother. One of the features I like about this is the fact that if an incorrect code is inputted more than (3) times over, the system will lock out for a full (2) minutes, which will discourage a curious or malicious person trying to crack your code. In terms of security, this safe can be bolted down to the floor, which is wise to do, if you have the means to do so. The included bolts are very heavy duty, and would be very effective in keeping anyone from removing this safe from your residence. Without the bolts (despite the 100+ lbs. weight of this safe), a malicious person could pick up this safe and walk away with it - demonstrated by the fact that our FedEx driver carried the safe into our home. Access can be made with the keypad code that you enter, or in the case of battery failure (or forgetting your access code), the safe comes with (2) skeleton style keys. What I like about the keys is the fact that the key entry is 100% hidden behind the removable keypad, which is not obvious at all. One would have to be knowledgeable about this feature to utilize it correctly, so I really like this hidden aspect. However, it is highly prudent such keys are hidden with great care, as curious minds could easily ascertain this information with a basic Google search. So, if you have young children or teenagers alike, be 100% sure this set of keys is in a locale they could never find - with them, access to the safe is moments away. One aspect that would be nice is interior LED lighting, as it is quite dark further back into the safe itself. However, you can easily find auto illuminating LED's for this very application, so this is an easy add-on to a well built safe. Overall, I am very happy with my purchase. I feel confident that this safe will vastly discourage anyone from gaining access to my firearms, and I trust that this layer of protection will keep my family safe, as I always want to be as responsible as possible when it comes to firearms - especially with curious children who simply do not know better, no matter how much they are taught or drilled. Whether your intent is to store firearms like me, or other valuable possessions, I feel that this Sentry Safe is one of the best on the market when you break down the size, pricing and features. I am very happy with my purchase, and look forward to utilizing this safe to its fullest potential.
Review: High quality and spacious safe with one major (but correctable) design flaw - I don't normally write product reviews, but felt compelled to review this safe. I own another (deposit style) safe from Sentrysafe and have been very happy with the overall build quality. I was looking for a slightly larger safe that offered more organization and usable space. This safe is very high quality, sturdy (and very heavy--100lbs). It has several very useful features including soft inner light, backup key access, and carpeted shelves. **If you read the reviews on this safe, I think most would agree on the superb materials, fit, and finish. Many of the negative reviews point to a flawed battery compartment design. The battery compartment for this safe is located on the INSIDE of the safe (as opposed to behind the keypad on the OUTSIDE of the door). This means that the safe needs to be OPEN to change the batteries. Unfortunately, there is a significant gap between the battery tray and lid so closing the heavy safe door can dislodge the batteries and disconnect the circuit, rendering the electronic keypad unusable and you will need to use the back-up key to manually open the safe. This completely defeats the purpose and convenience of the electronic keypad altogether. Some people have reported a few jerry-rigged solutions like inserting a piece of cardboard in between or taping the batteries in place. I had some extra furniture foam pads (the kind you stick under chair/sofa/table legs etc... (to prevent scratching hardwood floors) and stuck a few of them across the inside of the plastic lid cover. This eliminates the gap and secures the batteries in place when closing the safe door regardless of how (reasonably) hard I tried. Problem solved! I totally agree that this is a major technical fail in the engineering and design of an otherwise extremely high quality safe. I took a chance with this minor modification and couldn't be happier with the final quality and value of this safe!

## Features

- FIREPROOF: Safe is ETL Verified to endure 1/2 hour at 1400°F to protect irreplaceable documents and valuables from fire
- WATERPROOF: Safe is ETL Verified for 72 hours of protection in water up to 12 inches deep offering peace of mind in the event of a flood
- COLOR: The digital keypad gun safe has a black exterior finish
- MEASUREMENTS: Exterior: 21.7 in. W x 19 in. D x 27.8 in. H and the interior is 19.4 in. W x 11.7 in. D x 25.8 in. H, extra-large 3.39 cubic foot capacity; weighs 163 lbs
- DURABILITY: Large gun safe has seven bolts, solid steel construction, and bolt down hardware
- CUSTOMIZABLE COMBO: The digital keypad can be programmed to use any desired code for entry

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B005O7N7WW |
| Additional Features | Fireproof, Waterproof |
| Alarm | anti-theft |
| Best Sellers Rank | #66,352 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #121 in Cabinet Safes |
| Brand Name | SentrySafe |
| Capacity | 3.39 Cubic Feet |
| Chamber Depth | 19 Inches |
| Chamber Height | 25.8 Inches |
| Chamber Width | 19 Inches |
| Color | black |
| Control Type | Touchpad Control |
| Customer Reviews | 4.0 4.0 out of 5 stars (1,677) |
| Global Trade Identification Number | 00049074019051 |
| Included Components | SentrySafe EF3428E Safe |
| Item Dimensions D x W x H | 19"D x 21.7"W x 27.8"H |
| Item Type Name | Safe |
| Item Weight | 163 Pounds |
| Lock Type | Electronic Combination Lock |
| Manufacturer | SentrySafe |
| Manufacturer Part Number | EF3428E |
| Manufacturer Warranty Description | 1 Year Limited Warranty |
| Material Type | Alloy Steel |
| Model Number | EF3428E |
| Mounting Type | Freestanding |
| UPC | 049074019051 778888064185 100012738462 |
| Unit Count | 1.0 Count |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** SentrySafe
- **Capacity:** 3.39 Cubic Feet
- **Color:** black
- **Included Components:** SentrySafe EF3428E Safe
- **Item Weight:** 163 Pounds
- **Lock Type:** Electronic Combination Lock
- **Material:** Alloy Steel
- **Mounting Type:** Freestanding
- **Product Dimensions:** 19"D x 21.7"W x 27.8"H
- **Special Feature:** Fireproof, Waterproof

## Images

![Fireproof and Waterproof XX-Large Black Steel Home Safe, DOJ-Certified with Digital Keypad Lock for Guns or Documents, 3.39 Cubic Feet, 27.8 x 21.7 x 19 Inches, EF3428E - Image 1](https://m.media-amazon.com/images/I/51DXHsQhlVL.jpg)

## Available Options

This product comes in different **Pattern, Style** options.

## Questions & Answers

**Q: Is the electronic keypad fireproof? If there is a fire, is the key the knly way in?**
A: The keypad is definitely not fireproof. It is nade of plastic. The way to go in is by key in case of fire.

**Q: I want to store gold and silver. How much weight can each shelf hold?**
A: I apologize for the late response but the shelves are able to hold 30 pounds in the center. SentrySafe stands behind the quality and workmanship of our products with a manufacturing warranty, after-fire replacement program (Fire-resistant safes), and a superior US based customer service team. For questions about our products, please contact us at 1-800-828-1438.

**Q: Does this safe come with a key, just in case you forget the password?**
A: Yes, this safe does come with override keys.

**Q: I am thinking about offering these in my rooms that I rent out via AIRBNB - are the codes easy to set for new clients? I am trying to find the type that you normally see in a hotel. What do you think?**
A: The codes are easy enough to set/reset on this safe.  This safe, however, is WAY BIGGER than a hotel room safe, which is typically only big enough for jewelry, wallets, passports, tablets & phones.  I love this safe as it holds 2 standard jewelry boxes of my stuff plus room for some file folders holding important documents.  But then maybe the  clients you rent to NEED a safe big enough to hold a laptop or brief of paperwork, etc.  We LOVE this safe;  our Police Dept. advised us to bolt it to the floor for added protection.

## Customer Reviews

### ⭐⭐⭐⭐⭐ High Quality, Heavy Duty Safe
*by L***Y on March 6, 2015*

Excellent safe - very pleased with this purchase. After looking long and hard for an adequate safe for multiple pistols I own, I came across this safe by chance, and overall, it had everything I wanted. Other safes I was looking at were quite small, looked flimsy, and even though they featured biometric capability, the user reviews left me very unnerved - some being broken into by children, while others being broken into with a firm strike with a fist. I am sure such stories were rare, but the fact that such incidents occurred left me highly wary of making a purchase. Not only is this safe larger than most within this price category, but the door and (4) bolt locking system is very robust. I was very pleased to see how solid and well built everything looked, and the heft / weight of this safe leaves me feeling confident that my firearms will be kept safe from curious children. Some users mentioned the carpeted shelves being flimsy and easy to give way. Yes, the shelves are very basic, but I had no troubles securing them in place with several firearms worth of weight that did not cause them to tilt or break free. Further, they are adjustable, allowing you to place them in differing areas, based upon your storage preferences. The locking mechanism feels very robust and stout - you can feel the (4) heavy duty bolts locking firmly into place, and the door has a nice solid heft to it as well. As for the keypad, it was very easy to program, and is very easy to use with soft push button keypads that allow you to input a (5) numerical code - everything except "00000", which would be ludicrous to use. I prefer this numerical keypad style of entry versus biometrics, as the more I read about biometric access, the less certain I felt. I am sure there are some excellent biometric safes available, but I simply like the basic numerical entry - safe, simple & effective, especially if you need access without fuss & bother. One of the features I like about this is the fact that if an incorrect code is inputted more than (3) times over, the system will lock out for a full (2) minutes, which will discourage a curious or malicious person trying to crack your code. In terms of security, this safe can be bolted down to the floor, which is wise to do, if you have the means to do so. The included bolts are very heavy duty, and would be very effective in keeping anyone from removing this safe from your residence. Without the bolts (despite the 100+ lbs. weight of this safe), a malicious person could pick up this safe and walk away with it - demonstrated by the fact that our FedEx driver carried the safe into our home. Access can be made with the keypad code that you enter, or in the case of battery failure (or forgetting your access code), the safe comes with (2) skeleton style keys. What I like about the keys is the fact that the key entry is 100% hidden behind the removable keypad, which is not obvious at all. One would have to be knowledgeable about this feature to utilize it correctly, so I really like this hidden aspect. However, it is highly prudent such keys are hidden with great care, as curious minds could easily ascertain this information with a basic Google search. So, if you have young children or teenagers alike, be 100% sure this set of keys is in a locale they could never find - with them, access to the safe is moments away. One aspect that would be nice is interior LED lighting, as it is quite dark further back into the safe itself. However, you can easily find auto illuminating LED's for this very application, so this is an easy add-on to a well built safe. Overall, I am very happy with my purchase. I feel confident that this safe will vastly discourage anyone from gaining access to my firearms, and I trust that this layer of protection will keep my family safe, as I always want to be as responsible as possible when it comes to firearms - especially with curious children who simply do not know better, no matter how much they are taught or drilled. Whether your intent is to store firearms like me, or other valuable possessions, I feel that this Sentry Safe is one of the best on the market when you break down the size, pricing and features. I am very happy with my purchase, and look forward to utilizing this safe to its fullest potential.

### ⭐⭐⭐⭐⭐ High quality and spacious safe with one major (but correctable) design flaw
*by A***A on June 16, 2020*

I don't normally write product reviews, but felt compelled to review this safe. I own another (deposit style) safe from Sentrysafe and have been very happy with the overall build quality. I was looking for a slightly larger safe that offered more organization and usable space. This safe is very high quality, sturdy (and very heavy--100lbs). It has several very useful features including soft inner light, backup key access, and carpeted shelves. **If you read the reviews on this safe, I think most would agree on the superb materials, fit, and finish. Many of the negative reviews point to a flawed battery compartment design. The battery compartment for this safe is located on the INSIDE of the safe (as opposed to behind the keypad on the OUTSIDE of the door). This means that the safe needs to be OPEN to change the batteries. Unfortunately, there is a significant gap between the battery tray and lid so closing the heavy safe door can dislodge the batteries and disconnect the circuit, rendering the electronic keypad unusable and you will need to use the back-up key to manually open the safe. This completely defeats the purpose and convenience of the electronic keypad altogether. Some people have reported a few jerry-rigged solutions like inserting a piece of cardboard in between or taping the batteries in place. I had some extra furniture foam pads (the kind you stick under chair/sofa/table legs etc... (to prevent scratching hardwood floors) and stuck a few of them across the inside of the plastic lid cover. This eliminates the gap and secures the batteries in place when closing the safe door regardless of how (reasonably) hard I tried. Problem solved! I totally agree that this is a major technical fail in the engineering and design of an otherwise extremely high quality safe. I took a chance with this minor modification and couldn't be happier with the final quality and value of this safe!

### ⭐ Door Fails After 18 Months — No Support. DO NOT PURCHASE THIS SAFE!
*by A***R on December 12, 2025*

I purchased this safe about a year and a half ago, and the door no longer closes or locks properly. For a product that’s supposed to protect valuables, this is completely unacceptable. When I contacted customer service, they refused any return or replacement, saying the warranty was expired. Their only “solution” was to literally push my entire body weight against the door—especially the left side—while entering the code and trying to force the handle to turn. They even suggested having a second person help push so the gasket would compress. I’m sorry, but if a safe requires two adults to shove the door just to close it after 18 months, that’s a design failure, not a fix. Do NOT purchase this model. It’s unreliable, the support is unhelpful, and the safe becomes useless exactly when you need it most.

## Frequently Bought Together

- SentrySafe Fireproof and Waterproof XX-Large Black Steel Home Safe, DOJ-Certified with Digital Keypad Lock for Guns or Documents, 3.39 Cubic Feet, 27.8 x 21.7 x 19 Inches, EF3428E
- SentrySafe Fire and Water Resistant Portable Bag with Zipper for Money or Document Storage, FBWLZ0SSC

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-05-19*