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SentrySafe HD4100 ETL Verified Built-In Straps Document Safe

Last updated: September 18, 2023


This document safe boasts an interior area of 12-by-8.1-by-11.5 inches to give you up to 0.65 cubic feet of file storage. It's rated for a half an hour of fire exposure up to 1550°F and up to 72 hours of water submersion. The flat key lock will keep the lid in place even with exposure to extreme heat.

We looked at the top Document Safes and dug through the reviews from some of the most popular review sites. Through this analysis, we've determined the best Document Safe you should buy.

Product Details

Key Takeaway: Keep your important documents organized with this safe, which is wide enough to hold hanging file folders.

In our analysis of 12 expert reviews, the SentrySafe ETL Verified Built-In Straps Document Safe placed 3rd when we looked at the top 9 products in the category. For the full ranking, see below.

From The Manufacturer

Fireproof box is UL Classified to endure 1/2 hour at 1550°F to protect irreplaceable documents, small valuables, DVDs, and USBs from fire. Waterproof box is ETL Verified for 72 hours of water submersion offering peace of mind in the event of a flood. Fire safe features a flat key lock to prevent the lid from opening in the event of a fire; Includes 2 keys. Material – Captured Fire Insulation. Document safe features built-in straps for easy storage of passports, social security cards, and birth certificates; Fire box accommodates letter-size hanging files and folders (sold separately). Exterior: 15.5 inch W x 13.5 inch D x 14.3 inch H; Interior: 12 inch W x 8.1 inch H x 11.5 inch H; Medium capacity 0.65 cubic feet; Weighs 39 pounds.

Expert Reviews


What reviewers liked

Very roomy, holds hanging files and other documents. Both water and fire resistant. Heavy duty construction, not easily removed by criminals.
This security box is waterproof, and it has the capacity to withstand the water pressure in case of a flood for 72 hours. It is made of captured fire insulation, and it has a traditional but flat key lock that will prevent the lid from opening in the event of a fire.
In terms of waterproofing, it’s also high standard. It’s ETL Verified for 72 hours of water submersion. It also has the 1/2 hour at 1550°F fireproofing, making this safe comparable to other high quality safes on the list.
The cabinet is large enough to hold many documents and other valuables that need to be protected from fire and water. The seal is tight and prevents water from getting in. The HD4100 safe is ETL verified for water as well as fire resistance. In addition it is UL classified for fire protection (30 minutes of resistance to 1550°F). The safe comes with a one-year warranty and is guaranteed for after-fire replacement.
Sentrysafe provides a flat key that includes two keys for strong protection. These features prevent the lid from opening in the event of a fire. And help to keep your valuable items private and secure.

What reviewers didn't like

Original keys are not durable, so duplicates recommended. Plastic elements not as fireproof as promoted. Better for document storage than valuable possessions.
We can’t recommend the SentrySafe HD4100. Even though it has a more solid fit and finish than other safes we’ve tested from the company, the issues we’ve seen are so widespread and serious that we’re reticent to suggest any of SentrySafe’s models.
One thing that did make us a little weary is that it comes in a a whopping 39 Lbs and has no handles. So, we’re not going to want to be lugging this one around.
Carrying it actually not so easy because there are no handles to hold on to. Plastic latch may feel cheap and not safe.
Not very safe, because of lightweight, anyone can steal the box easily.
View our Document Safe buying guide for in-depth advice and recommendations.

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