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SentrySafe HD4100

Fireproof & Document Safes · SentrySafe

SentrySafe HD4100

2.8/5 Best Safe Score (how we score)

My pick for hanging folders: a top-opening file box UL Classified for 30 minutes at up to 1,550°F and ETL verified against flood damage for up to 72 hours. I'd use it for a home office's tax files and records.

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Details

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Who it's for

What we like

  • Holds hanging file folders (retailers list up to 40)
  • UL Classified 1/2 hour at 1,550°F and ETL-verified flood protection for up to 72 hours
  • Light enough to grab and carry (38.85 lb)

What to know first

  • SentrySafe says the key lock is basic protection, not meant to resist tool attacks
  • One Staples owner had the insulated lid come loose on opening (replaced free)

Product details

BrandSentrySafe
ManufacturerSentrySafe
ModelHD4100
Part numberHD4100
Dimensions (L x W x H)13.5 inches x 15.5 inches x 14.3 inches
Item weight38.85 pounds
ColorSilver Gray
Size11.5 x 12 x 8.1 inches
WarrantyManufacturers Limited Warranty
LockPrivacy key lock
Fire ratingUL Classified, 1/2 hour at up to 1,550°F (843°C)
Water ratingETL Verified, flood damage up to 72 hours
Interior11.5 x 12 x 8.1 in, 0.65 cu ft
Exterior14.3 x 15.5 x 13.5 in
Weight38.85 lb

Top rows from the Amazon listing; the rest from the maker pages we checked.

About this item

  • ADVANCED FIRE PROTECTION: Fire safe box is UL classified for fire endurance (1/2 hour at 1550ºF) to protect critical home or business documents, records and valuables from fire damage; ETL verified (1/2 hour at 1550ºF) to protect CDs, memory sticks, and other digital media; holds up to 40 standard 8.5 in. x 11 in. hanging folders (not included)
  • WATER RESISTANT: Security safe is ETL verified for water submersion up to 72 hours; providing peace of mind in the event of flood
  • KEY LOCK: Fire resistant safe has a privacy key lock to keep unwanted viewers away and prevent the lid from opening in the event of fire; includes two keys
  • SPACIOUS INTERIOR: Large file safe fits wherever you need and accommodates letter size hanging files and folders; Built-in straps for easy storage of passports and other documents; Interior: 11.5 in. H x 12 in. W x 8.1 in. D, exterior: 14.3 in. H x 15.5 in. W x 13.5 in. D
  • AFTER FIRE REPLACEMENT GUARANTEE: In the event of a fire, SentrySafe will replace your fire-resistant product to help get you back on your feet

From the product's Amazon listing, as of Nov 7, 2026, 7:59 PM UTC. The seller writes this text, not us, and Amazon may change it.

What owners say

Summarized from 3 owner discussions and review pages we read.

Praise

  • Owners like the hanging-file capacity for household records
  • A Walmart owner in February 2026 found the lock easy to use

Complaints

  • One Staples owner said the insulated top fell back and came off the base when opened
  • Review summaries flag the plastic latch as weak against theft

Sources: Staples customer reviews: SentrySafe HD4100 · Walmart listing and reviews: SentrySafe HD4100 · ShopSavvy review summary: SentrySafe HD4100

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