SentrySafe CHW20221: Specs, Owner Reviews and Where to Buy

Who it's for

Best small fire chest for raw keys in Best Safe for Comic Books – 5 Picks Checked for CGC Slab Fit: Collectors who want their top raw books in one grab-and-go box or nested in a bigger safe; a CGC slab misses by 0.1 inch and the key lock stops no thief.
Best budget fire chest in Best Home Safe Under $500 – 10 Picks Sorted by Fire, Theft and Guns: Anyone on a tight budget who needs to protect a handful of irreplaceable papers; it carries easily, so a thief can carry it too.
Best budget fire chest in Best Fireproof Safe for Home – 6 UL-Rated Picks Compared: Renters and anyone on a tight budget who needs to protect a handful of irreplaceable papers; it carries easily, so a thief can carry it too.

Brand	SentrySafe
Model	CHW20221
Color	Black
Size	6.6 x 15.4 x 14.3 Inches
Lock	Key lock
Fire rating	UL Classified, 1/2 hour at 1550°F (843°C)
Water rating	ETL Verified, flood damage up to 72 hours
Interior	4.4 H x 12.8 W x 8.5 D in
Exterior	6.6 H x 15.4 W x 14.3 D in
Weight	About 20.4 lb
Raw comics (my math)	About 17 lying flat

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

Product 1: Fireproof box is UL Classified to endure 1/2 hour at 1550°F to protect irreplaceable documents, small valuables, DVDs, and USBs from fire
Product 1: Waterproof box is ETL Verified for 72 hours of water submersion offering peace of mind in the event of a flood
Product 1: Fireproof lock box features a tubular key lock for added security and to prevent the lid from opening in the event of a fire; Includes 2 keys
Product 1: Document safe features built-in straps for easy storage of passports, social security cards, and birth certificates; Fire box holds A4 size paper
Product 2: Fireproof box is UL Classified to endure 1/2 hour at 1550°F to protect irreplaceable documents, small valuables, DVDs, and USBs from fire
Product 2: Waterproof box is ETL Verified for 72 hours of water submersion offering peace of mind in the event of a flood
Product 2: 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
Product 2: 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)

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.

Summarized from 2 owner discussions and review pages we read.

Rounded inner corners make papers curl
A key that would not go fully into the lock
One owner reported the key would not fully enter the lock
The tubular key lock will not stop a pry bar
One owner reported the key would not fully enter the lock, so it would not lock
Reviewers describe the tubular key lock as a privacy latch that will not stop a pry bar