SentrySafe HD4100 Fire-Resistant and Water-Resistant Box Safe with Key Lock, 0.65 cu. ft.
SentrySafe HD4100 Fire-Resistant and Water-Resistant Box Safe with Key Lock, 0.65 cu. ft.
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SentrySafe HD4100 Fire-Resistant and Water-Resistant Box Safe with Key Lock, 0.65 cu. ft.

1,794 ratings

Key item features

  • Fire Protection: Fire-resistant box is UL Classified to endure 1/2 hour at 1550F to protect irreplaceable documents, small valuables, DVDs, and USBs from fire.
  • Water Resistance: Waterproof box is ETL Verified for 72 hours of water submersion offering peace of mind in the event of a flood.
  • Secure Lock: Features a flat key lock to prevent the lid from opening in the event of a fire; includes two keys for added security.
  • In-Lid Storage: Allows in-lid storage of passports, social security cards, and birth certificates; accommodates letter-size hanging files and folders (sold separately).
  • Dimensions: Exterior dimensions: 14.3 in. H x 15.5 in. W x 13.5 in. D; Interior dimensions: 11.5 in. H x 12 in. W x 8.125 in. D; Capacity: 0.65 Cu. ft.; Weight: 38.85 Lbs.
  • Digital Media Protection: Protects tablets, phones, external hard drives, memory cards, USB drives, CDs, DVDs, and other electronic storage devices.
  • Organized Storage: In-lid organizer helps make small valuables like passports, extra keys, or media files readily available.
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Specs

Safe type, Standalone SafesLock type, Key LockFire rating, 1/2 hour at 1550FIs fire-resistant, YResists water, YVolume capacity, 0.65 ft³

About this item

Product details

The SentrySafe HD4100 Fire-Resistant Box Safe and Water-Resistant Box Safe 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. Fire-resistant safe box is UL Classified to protect your valuables in a fire for a 1/2 hour up to 1550°F (843°C). Water-resistant safe box is ETL Verified to protect your valuable items from flood damage up to 72 hours. Features digital media protection that helps protect tablets, phones, external hard drives, memory cards, USB drives, CDs, DVDs and other electronic storage devices. Included in-lid organizer helps make small valuables like passports, extra keys or media files readily available. Privacy key lock is our most standard option to secure your valuables. Exterior dimensions: 14.3 in. H x 15.5 in. W x 13.5 in. D; Interior dimensions: 11.5 in. H x 12 in. W x 8.125 in. D; Capacity: 0.65 Cu. ft.; Weight: 38.85 Lbs.

SentrySafe HD4100 Fire-Resistant Box and Waterproof Box with Key Lock 0.52 cu. ft.:

  • Fire-resistant 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-resistant lock box features a flat key lock to prevent the lid from opening in the event of a fire; includes two keys
  • Document safe allows in-lid storage of passports, social security cards, and birth certificates; fire box accommodates letter-size hanging files and folders (sold separately)
  • Exterior dimensions: 14.3 in. H x 15.5 in. W x 13.5 in. D; Interior dimensions: 11.5 in. H x 12 in. W x 8.125 in. D; Capacity: 0.65 Cu. ft.; Weight: 38.85 Lbs.
info:
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.  

Specifications

Safe type

Standalone Safes

Lock type

Key Lock

Fire rating

1/2 hour at 1550F

Is fire-resistant

Y

Warranty

Warranty information

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Customer ratings & reviews

4.3 out of 5 stars
stars
1,794 ratings806 reviews
Includes global ratings and reviews
How item rating is calculated
  1. 5 stars68% (1,218)
  2. 4 stars15% (278)
  3. 3 stars6% (100)
  4. 2 stars3% (45)
  5. 1 star9% (153)

Reviews summary

Pros

  • : The unit fits the intended space and stores items well.
  • : The interior accommodates full-size files and envelopes.
  • : Offers good quality at a reasonable cost.
  • : The products maintain uniform construction across units.
  • : Offers protection against water and fire damage.

Cons

  • : It requires excessive force and can fail to engage.
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Showing 1-3 of 806 reviews

Feb 10, 2026
Reviewer name: Cesar
Top Reviewer
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Great Safe for Important Documents

The SentrySafe HD4100 is a solid buy for the price. It feels well built, and I actually like the color and overall look of it. It's a bit heavier than I expected for its size — definitely easier to move with two people — but that weight also makes it feel sturdy and secure. The interior space is just right for storing important documents, passports, and other paperwork. Everything fits flat, and it gives me peace of mind knowing they're protected from fire and water. Overall, a dependable safe that does exactly what it promise

Helpful?5YKNWG9KHXMR34008332
Jul 11, 2026
Reviewer name: Angela
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Love it

I love this, I got it for to store insurance and disability paperwork for my child and it the best investment I ever made. I'm going to get a bigger one next time for the amount of papers I have from the doctors, hospital and for disability. It close shut and you can leave it as is or lock it with the key. And it super strong, I drop it down by accident and it wasn't even dented

Helpful?5YKNWG9KHXMR34008332
Oct 18, 2026
Reviewer name: SKULPTER
Top Reviewer
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Bought for a friend. Keep in mind it is very heavy, but holds a lot

Helpful?5YKNWG9KHXMR34008332
Current price is $68.001.8 ¢/ea
Price when purchased online
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  • Free 90-day returns
$68.00
Out of stock
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