Model # EF3428E

Internet #203078662

SentrySafe 3.4 cu. ft. Electronic Lock Fire Safes


3.4 cu. ft. Electronic Lock Fire Safes

  • Exterior dimensions: 21.69 in. W x 19 in. D x 27.75 in. H
  • Interior dimensions: 19.38 in. W x 11.73 in. D x 25.75 in. H
  • Backed by a 1-year limited warranty
$57051 /each
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Product Overview

The SentrySafe 3.4 cu. ft. Electronic Lock Fire Safe features a carpeted interior with two adjustable-height shelves to cozily warehouse prized possessions and high-value items. Fire-resistant for 30 minutes up to 1400 degrees and water-resistant for up to 3 days in 12 in. of water, this extra-large executive digital fire safe is designed to withstand minor calamities and preserve valuables. It is constructed with rugged steel to thwart intrusion and is equipped with seven oversized bolts to keep the door securely latched. The programmable electronic lock lets you choose your combination and an override key allows access in an emergency. Holes are pre-drilled in the base to mount it to the floor with the included fastening hardware.

  • ETL verified 1/2-hour fire protection for up to 1400 degrees
  • ETL verified water-resistant in 12 in. of water for 72 hours
  • May be bolted to floor (hardware included)
  • Programmable electronic lock with override key
  • 7 oversized bolts (30 mm) help to prevent unwanted entry and access
  • Thicker door for added security
  • Equipped with 2 multi-position shelves for organizational efficiency
  • Carpeted interior protects contents against scratching
  • Requires 4 AAA batteries (sold separately)
  • Weighs 163 lbs.
  • Click here for more information on Electronic Recycling Programs



Interior Depth (in.)
Interior Height (in.)
Interior Width (in.)


Lock Type
Peril Type
Product Weight (lb.)
Safe Capacity (cu.ft.)
Safe Size

Warranty / Certifications

Manufacturer Warranty
1 Year Limited; Life time after-fire replacement guarantee

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Customer Questions & Answers

can it be bolted to floor?

does it have holes for bolt down
Asked by: radmaxx
Answered by: Honeyman
Date published: 2016-12-08

Is this safe OK to store handguns?

Asked by: mlg
Probably would be ok.
Answered by: coving
Date published: 2017-01-18

Is the handle made of plastic or metal

Asked by: gaby
The handle on this safe is metal.
Answered by: CommunityAnswer
Date published: 2016-04-28

Is there a way to change the master code?

Asked by: Leroy
You can add your own code, but the factory one, per the instructions, cannot be changed!
Answered by: JustAGuy
Date published: 2016-03-30
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Customer Reviews

3.4 cu. ft. Electronic Lock Fire Safes is rated 4.2 out of 5 by 24.
Rated 1 out of 5 by from Stinky safe This safe smells awful!!! After trying everything over 3 weeks the smell would not come out. Do not buy
Date published: 2017-02-08
Rated 1 out of 5 by from not very secure You can open this safe with only a magnet. It was done in under a minute.
Date published: 2016-03-07
Rated 5 out of 5 by from Very good product. Small enough to make it manageable to place, but sturdy enough to feel comfortable when anchored. Interior is padded for extra cushioning.
Date published: 2012-02-23
Rated 3 out of 5 by from Needs polish First: Factory combo cannot be removed. You can set your own tho. Instructions for removing a user-set combination are unclear. Safe arrived in a plain box w/2 stickers (around 4"x6") indicating SentrySafe. Thankfully it was not plastered w/ pictures and things to attract notice during delivery. Safe seems solid and feels substantial overall, BUT, made in China, it needs more attention to detail! (1) One of the two round holes in the safe bottom for attaching it to a floor had poor fit/finish. Namely, the hole in the metal did not align with the hole in the sheetrock-like insulating material. This meant that the washer required for waterproofing would NOT sit flush on the bottom. This basically negated one of the safe's major features. I was able with some effort to shave off enough of the insulator to get the washer installed, but I'm not convinced water won't get in. BEWARE! (2) Bolt-down instructions were sparse, and where it says to use a 3/8" drill bit for concrete, there was NO WAY the hard plastic sheath was going into that small opening. I took some creative license to get it installed, but be prepared for some trial-and-error. Also, BEWARE HUMIDITY, which I was warned about after my purchase. It's apparently not unusual for the humidity inside insulated safes to rise after it's closed and the air cools down on the inside. I measured 71% relative humidity inside after 24 hours (at 70 degrees inside) while my house is 36% RH (at 74 degrees). Apparently some higher end safes include an electrical outlet inside to connect a small heating rod to prevent this problem. This safe doesn't have that feature. So I ordered an Eva-Dry E-333 reusable dehumidifier for $20 to reduce the humidity inside. If I had more confidence in the waterproofing, I would have given this safe a much higher rating. Finally, be very careful registering your safe online. It might sound like a good idea to give them your name, address, factory combination (that you cannot change), and emergency key number, but how well do they protect their web data? Seems like it could be a literal treasure chest for a hacker.
Date published: 2016-03-29
Rated 5 out of 5 by from Excellent with enough room for items that are larger Wanted a bigger safe to hold silver, etc. This does it, and you still have room for legal papers, passports, and other stuff. Easy to open and close. Well made strong box and too heavy for anyone to pick up and walk away with. Has emergency keys if the electronic combination unit should fail.
Date published: 2012-06-06
Rated 4 out of 5 by from So far so good ...seems like a good buy to me...time will tell. Ordering online sight ... So far so good ...seems like a good buy to me...time will tell. Ordering online sight was exactly what i was expecting.
Date published: 2016-12-08
Rated 5 out of 5 by from Great product. Came as described and is very heavy. Great addition for our office Great product. Came as described and is very heavy. Great addition for our office
Date published: 2017-01-18
Rated 5 out of 5 by from This is the second Sentry Safe that I purchased and It is everything that I needed.
Date published: 2014-06-13
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