Quick Answer: The Steelwater Heavy Duty (model LD593024) is a 1-hour, 1875°F fire-rated gun safe built on 12-gauge steel for around $2,099, while the step-up Extreme Duty (HD593024) doubles the fire window to 2 hours on a thicker 9-gauge body with a 1/4” plate door for around $2,499. Steelwater’s own current spec sheet lists both as 26-long-gun capacity (14-18 average once loaded with real firearms), correcting the “22 long gun” figure still floating around some retailer listings. For fire protection and steel gauge per dollar, both models undercut comparably-rated Liberty or Fort Knox safes by hundreds of dollars.
Steelwater built its reputation on a simple pitch: match or beat the fire rating of the big brand names for noticeably less money. We pulled current specs directly from Steelwater’s own product pages to check that pitch against two of its most popular models — the Heavy Duty and Extreme Duty — and found one genuine spec correction worth flagging before you buy.
Steelwater Heavy Duty vs. Extreme Duty at a glance
| Model | Capacity | Fire rating | Steel | Price | Rating |
|---|---|---|---|---|---|
| Steelwater Heavy Duty (LD593024) | 26 long guns (14-18 avg) | 1 hr / 1875°F | 12-gauge body | ~$2,099 | ★★★★½ |
| Steelwater Extreme Duty (HD593024) | 26 long guns (14-18 avg) | 2 hr / 1875°F | 9-gauge body + 1/4" plate door | ~$2,499 | ★★★★★ |
Steelwater Heavy Duty Gun Safe (LD593024)
- 1-hour / 1875°F fire rating on 12-gauge steel — one of the highest temperature ratings in its price class.
- 20 solid-steel locking bolts total (13 active, 7 inactive on the hinge side) driven by a gear-and-bolt system, plus a spring-loaded relocker if the lock is punched or drilled.
- Meets California DOJ's residential security container standard, one of the toughest state-level bars a safe can clear.
- Heavy — plan for a dolly and at least one helper for placement.
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Steelwater Extreme Duty Gun Safe (HD593024)
- 2-hour / 1875°F fire rating, double the Heavy Duty's window, on a thicker 9-gauge body.
- 1/4-inch solid steel plate door — noticeably harder to pry or drill through than the standard composite door.
- Same 20-bolt locking system, gear-driven lock, and CA DOJ compliance as the Heavy Duty.
- About $400 more than the Heavy Duty for the same capacity — the extra cost buys fire time and door steel, not more room.
The capacity correction: 26 long guns, not 22
Steelwater’s own current product pages list the LD593024 and HD593024 as 26-long-gun safes, with a realistic 14-18 average once you factor in scopes and stock width — the same physical safe that a number of retailer listings, and some pages on this site, still describe as a “22 long gun” model. That older “22” figure appears to be a stale capacity claim that predates a Steelwater spec revision on the identical dimensions and model numbers; buyers should size their own gun count against the 14-18 practical range, not the marketing maximum, regardless of which figure a given listing shows.
Who should buy which tier
Buy the Heavy Duty if a 1-hour fire rating is enough margin for your situation and you want to spend the least amount of money on real fire protection — it already beats the fire rating of many safes costing $1,000+ more. Buy the Extreme Duty if you’re storing irreplaceable documents, optics, or a larger collection where an extra hour of fire margin (fire department response in a residential fire commonly runs well past 20-30 minutes) and a thicker plate door are worth the roughly $400 premium.
Neither tier is the right choice if you need a true budget entry point — see our best gun safe under $1,000 guide instead — or if brand-name resale and showroom support outweigh a better fire-rating-per-dollar spec sheet, in which case our gun safe brands comparison covers Liberty, Fort Knox, and other name brands directly.
The bottom line
The Steelwater Heavy Duty delivers a 1-hour, 1875°F fire rating on 12-gauge steel for about $2,099, real capacity for 14-18 guns despite older “22-gun” listings still circulating, and a 20-bolt locking system that undercuts comparably-rated big-name safes by hundreds of dollars. Step up to the Extreme Duty for double the fire window and a thicker plate door if the extra margin is worth roughly $400 more. See our best fireproof gun safe roundup for how these stack up against Liberty and SentrySafe.