• SentrySafe Fire/Water File: Model HD4100

  • HD4100 Fire/Water File is rated 4.3 out of 5 by 90.
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  • LargeModel HD4100
  • Interior Capacity 0.65 cubic ft
  • Price Range: $50-$100
  • Security Protection Security Protection
  • Fire Resistant Fire Protection
  • Water Resistant Water Protection
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  • UL Fire Endurance

Top of the Line Protection

  • Fire Protection

    UL Classified to protect your valuables in a fire for a 1/2 hour up to 1550°F (843°C)

  • Water Protection

    ETL Verified to protect your valuable items from flood damage up to 72 hours

  • Security Protection

    More Information

    Privacy key lock deters unwanted viewers or children from accessing the contents of the safe. These safes provide basic protection and are not intended for tool attacks.


The HD4100 holds up to 40 standard hanging folders making it the ideal storage solution for your important family or business documents. In-lid organization keeps frequently accessed items such as passports, check books and digital media within easy reach. Complete with ETL Verified flood protection and UL Classified fire protection to provide true peace-of-mind for your irreplaceable valuables.


Privacy Key Lock

Our most standard option and the simplest way to secure your valuables. Typically accompanied by a spare for convenience.

Digital Media Protection

Protect tablets, phones, external hard drives, memory cards, USB drives, CDs, DVDs and other electronic storage devices.

Accommodates Hanging Files

Keep important files like medical records, business records, financial paperwork and more organized and protected. (Hanging Files not included)

In-Lid Organizer

For small valuables like passports, extra keys or media files that you want to access quickly, this storage section makes these items readily available.


    • Exterior Size

      14.3 in H X 15.5 in W X 13.5 in D

    • Interior Size

      11.5 in H X 12.0 in W X 8.1 in D

    • Capacity

      0.65 cubic ft

    • Lock Type

      Flat Key

    • Peril Type

      Security, Fire, Water

    • Weight

      38.850 lb

    • Material

      Captured Fire Insulation

    Note: All dimensions and weights provided are approximate, and are subject to change without notice.


    • Product Manual

      Download the latest owner’s manual for this product.

      View Product Manual
    • FAQs

      Find answers to the most frequently asked questions.

      View FAQs
    • Videos

      Guides to safe setup, troubleshooting, and other support needs.

      View Videos
    Rated 2 out of 5 by Unsatisfied Customer from You get what you pay for I wanted a small safe to keep my personal documents safe and secure. I first bought a cheaper sentry safe that I thought would work but when I got it out of the box the bottom of the safe was swollen and wouldn't sit flat. I took it back and decided to step up a price range to this safe. It seemed great until I tried to put hanging folders and file folders in it and realized this safe was also swollen and the files couldn't fit inside without bending. I had to trim 1/4" off of every folder to get them to fit. If you need a cheap safe to keep documents safe this might work but it is a cheap quality safe. If you want a nice safe keep looking.
    Date published: 2018-11-20
    Rated 3 out of 5 by Chris9393 from Where is the handle? This page states under the "Features" that the HD4100 model has a carrying handle, but when I ordered one, it does not have the handle. That was one of the features I wanted since this safe is heavy (38.85 lbs. when empty). Very misleading. Hopefully I can return the safe, but I don't think I can order another SentrySafe with confidence since I have no guarantee that the features listed will actually be on the safe when I receive it.
    Date published: 2018-08-31
    Rated 4 out of 5 by Mrc123 from Very solid but insanely heavy! This firebox is sturdy and very heavy duty. I bought it to store important documents. However, it was too heavy for me to even move it. I had to literally use a hand-cart to move it! There is no handle to aid in moving it. It is advertised as a firebox, but honestly it is more like a small safe. I like its other features but I don't know why they made it so dang heavy!
    Date published: 2018-08-28
    Rated 1 out of 5 by Martmoose from This safe is not too safe. This safe is not too safe. I can quickly break in to it with a screw driver. The locking latch needs to be metel. Also, it is too heavy not to have handles on the sides or on the top. The inside is too narrow and is barrly wide enough for hanging folders. When I tried to register it I had a very hard time finding the Modle number and serial number. The lable was not installed on the front with this information. The hinge is also plastic and can easily break. I am not too happy with the engenering for this safe.
    Date published: 2018-06-24
    Rated 2 out of 5 by Buckeroo from A fire proof box - not a safe These items with a lid, all sizes are not safes. They are not secure from unwanted entry. They are merely fireproof boxes. All the hinge mechanisms are held in by plastic knobs, that will depress from use and the hinge will no longer offer any security as you can lift the lid at the hinge side. Note this does not affect its fireproof feature. The same can be said for the locking mechanisms, these are merely in place to keep the lid shut, but the handles as some on amazon have said, and the lock mechanisms have detached from the unit. Once again, this does not affect its fireproof feature. If you are looking for something that is fireproof and secure, then you need to get a real safe, not one of these boxes.
    Date published: 2018-11-21
    Rated 4 out of 5 by Robert M Durante from Needs Handles This site is extremely strong and heavy (which is good), however, it needs handles on the sides! I don’t think it would injure the integrity of the wood and fire properties of the safe. I’ll handle on the top would not be good because the lock seems to be average compared to the weight and strength of the safe. It is very difficult to move the safe without handles. I think you can probably figure out something in your subsequent models!
    Date published: 2018-11-19
    Rated 1 out of 5 by mmp1234 from Flawed Design and Product - Do Not Buy I purchased this safe over a year ago but for a variety of life reasons did not open the box until yesterday. Upon opening and using for the first time, the lid broke off and powder came out (exactly like the other people's reviews and pictures). Since the company told everyone who complained in these reviews to call them at the 800 number I thought I'd try that. However, when I called I was told the warranty is only for one year and they would do nothing for me even though I repeatedly explained I just opened this and it broke immediately. Not only will I never buy this safe again but I will never again buy a product from this company and I will advise anyone I know who is thinking of purchasing from SentrySafe to read these reviews.
    Date published: 2019-09-23
    Rated 1 out of 5 by Unsafe from Material expanded and broke lid off It basically broke itself. Material inside expanded until lid broke off one day. Powder all over. Happened within a year.
    Date published: 2019-06-11
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