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Master Lock STW123 Black — Review & Specs | Pricepect | Pricepect

Home Fireproof SafesMaster Lock STW123 Black

Master Lock STW123 Black — image 1

Master Lock

Master Lock STW123 Black

Expert Review Analysis

The Master Lock Black Premium Fireproof and Waterproof Safe (STW123DUBML) is a 1.2 cubic foot residential safe engineered with high-grade steel and fire insulation to protect documents and valuables. It features UL certification for 2-hour fire protection at 1850°F and ETL verification for 24-hour water resistance up to 8 inches, secured by a mechanical combination dial and four live-locking steel bolts.

✓ Best for: Homeowners or small office users needing to protect irreplaceable documents, passports, wills, cash, or jewelry from prolonged fires or floods in fire-prone or flood-risk areas.✗ Not ideal for: Users requiring high-value theft deterrence beyond residential-grade security, or those needing multi-user access codes and digital lock convenience.

Pros

✓UL Classified for 2 hours of fire protection at 1850°F with 15 ft impact drop resistance
✓ETL verified for 24 hours of water resistance up to 8 inches deep
✓

Best Seller Rank History

Now#199Best#142Worst#273 -56

Lower = better sales rank

Rating Trend

Rating4.3/ 5Reviews84+-27 reviews

Specifications

Design

Exterior Height17.8 inches mm

Exterior Width16.3 inches mm

Exterior Depth19.3 inches mm

Interior Height13.8 inches mm

Interior Width12.6 inches mm

Features

Fire Rating2 hours at 1850°F

Fire CertificationUL Classified

Water Resistance Depth8 inches mm

Water Resistance Duration24 hours

Water CertificationETL Verified

General

BrandMaster Lock

ModelSTW123DUB

ColorBlack

Release Date2025-03-31

WarrantyLimited lifetime

Fire Certification

UL Classification2 hours at 1850°F (1010°C)

Water Certification

ETL Verification24 hours at 8 inches depth

Impact Resistance

Drop Test Rating15 ft impact drop

Security Hardware

Live-Locking Bolts4 steel bolts

Hinge DesignPry-resistant hinge bar

Dimensions & Weight

Height17.8 Inches

Width16.3 Inches

Depth19.3 Inches

Weight128.0 pounds

Research Sources

store.masterlock.com

store.masterlock.com

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User Reviews

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4.2

(85 reviews)

$349.99

STW123DUBBlack1.23 cu.ft.

Fireproof Safes

Robust security with 4 live-locking steel bolts and pry-resistant hinge bar

✓Includes bolt-down hardware for secure installation to prevent theft

✓Interior organization features include a tray, shelf, and door pocket

✓Backed by a limited lifetime warranty for long-term durability assurance

Cons

✗Mechanical dial lock lacks multi-user code functionality found in digital models
✗Heavier and bulkier exterior dimensions compared to smaller 0.82 cu-ft variants
✗No independent professional reviews or user feedback data available for this model
✗Residential-grade security may be insufficient for high-value theft targets
✗Interior capacity is limited to 1.2 cubic feet for larger item storage needs

From Expert Reviews

Praised by Experts

✓Exceptional fire protection rating of 2 hours at 1850°F with impact resistance
✓Superior water resistance capability of 8 inches for 24 hours duration
✓Robust physical security construction with 4 steel bolts and pry-resistant design

Criticized by Experts

✗Mechanical dial lock is less convenient than digital alternatives for multi-user access
✗Heavier and bulkier physical footprint compared to smaller capacity models
✗Lack of independent professional review data to verify real-world performance claims

Expert Opinion

No independent professional reviews from sources like Consumer Reports or Wirecutter are available for this specific model. Manufacturer sources position the safe as offering the best protection in its class, highlighting UL and ETL certifications for fire and water performance alongside high-grade steel security construction.

What Users Say

No consumer reviews or user feedback data is available in the search results. Consequently, common praise, recurring complaints, and real-world reliability assessments cannot be detailed or verified from user sources.

Common Complaints

No user-reported complaints are available in the source data.

How It Compares

vs. Master Lock STW082GTCML

Advantages

✓Better water resistance depth of 8 inches compared to 5 inches
✓Higher security with 4 live-locking bolts versus 3 bolts

Disadvantages

✗Larger and heavier exterior dimensions than the compact 0.82 cu-ft model
✗Mechanical lock lacks multi-user code convenience of the digital sibling

Choose the STW123DUBML for better water protection and security bolts, or the STW082GTCML for a more compact footprint with digital convenience.

vs. Master Lock STW205GYCML

Advantages

✓More compact size suitable for standard bedroom or closet storage
✓Lower weight and footprint compared to the 2.0 cu-ft larger model

Disadvantages

✗Lower capacity of 1.2 cu-ft compared to the 2.0 cu-ft larger model
✗Fewer locking bolts (4 vs 6) reducing maximum theft deterrence

Choose the STW123DUBML for balanced mid-size storage, or the STW205GYCML for highest security and capacity for bulkier items.

vs. SentrySafe equivalents

Advantages

✓Superior water resistance depth of 8 inches compared to typical 5 inches
✓UL fire classification at 1850°F matches or exceeds many competitors

Disadvantages

✗Mechanical lock lacks the digital multi-user code features common in competitors
✗No independent review data available to verify performance against competitors

Choose the Master Lock STW123DUBML for superior water resistance depth, or SentrySafe for comparable fire protection with potentially more digital lock options.