When only the highest level of protection will do, the Steelwater Extreme Duty 45 Long Gun Safe (HD724228) stands in a class of its own. Designed for serious firearm owners, collectors, and homeowners who demand uncompromising security, this safe delivers extreme burglary resistance, advanced fire protection, and cutting-edge access control in one formidable package.

Engineered with 9-gauge steel, an ultra-thick composite door, and 20 oversized solid steel locking bolts, this safe is built to withstand aggressive pry attacks, drilling attempts, and extreme heat. With a massive 45 long gun capacity and customizable interior layout, the HD724228 offers both scale and sophistication—making it an ideal solution for large firearm collections, high-value assets, and critical documents.

Unmatched Fire & Burglary Protection

Fire is one of the most devastating threats to firearms and valuables. The Steelwater HD724228 provides 2 hours of certified fire protection at 1875°F, safeguarding your contents during prolonged structural fires. Its 5 1/8″ thick composite door incorporates a ¼″ solid steel plate and four layers of fireboard, while the body is reinforced with four additional fireboard layers plus a fire barrier throughout the walls, ceiling, floor, and door jambs.

A heat-activated expandable door seal expands up to eight times its thickness to block smoke and water intrusion—ensuring your valuables remain protected even after fire suppression efforts.

Extreme Duty Steel Construction & Locking System

This safe’s 9-gauge steel body offers significantly thicker protection than standard residential gun safes. Security is reinforced with 20 solid steel locking bolts, each measuring 1½″ in diameter and extended 25% longer for superior pry resistance. These bolts secure all four sides of the door, eliminating vulnerable attack points—even if hinges are compromised.

A gear-driven lock and bolt system resists punching and prying, while a drill- and ballistic-resistant hard plate shields the lock, relocker, gear drive, and linkages. An internal spring-loaded relocking bolt automatically engages if the lock is attacked, keeping the safe sealed when you need it most.

Advanced EMP-Proof Locking Technology

The HD724228 features a standard EMP-proof digital keypad, designed to remain functional even during power surges or electromagnetic events. The keypad includes LED backlighting for low-light operation and a capacitive “soft-touch” surface to reduce wear.

You’ll also receive a high-security double-bitted bypass key, protected by a drill-resistant hard plate—ensuring access even if electronics fail.

Optional X3 Biometric EMP-Proof Lock

Upgrade to the X3 Biometric Lock System, allowing access via:

• Fingerprint recognition (up to 200 users)

• Digital keypad

• Mechanical bypass key

This triple-layer access system offers unmatched flexibility for families, businesses, or firearm teams.

Spacious, Customizable Interior

The fully upholstered gray interior is designed for maximum organization and protection. A three-section gun rack holds up to 15 long guns per section, while eight adjustable/removable shelves allow you to configure storage for handguns, optics, ammunition, documents, or valuables.

Included accessories enhance usability:

• Automatic interior LED lighting

• FREE embroidered door organizer

• FREE UL-listed power supply with 3 AC outlets and 2 USB ports

• FREE Dry Pack 450-gram rechargeable dehumidifier

Key Features

• 2-hour fire protection at 1875°F

• 9-gauge steel body with decorative beveled edges

• 20 oversized 1½″ solid steel locking bolts

• EMP-proof digital keypad with bypass key

• Optional X3 biometric access system

• Gear-driven locking system with internal relocker

• Drill & ballistic-resistant hard plate

• Heat-activated smoke & water seal

• Automatic interior LED lighting

• Heavy-duty chrome 5-spoke handle

• Reinforced anchor holes for floor mounting

• California DOJ compliant

Warranty

The Steelwater Extreme Duty series is backed by a manufacturer warranty covering defects in materials and workmanship. Fire and burglary performance components are engineered for long-term reliability. Always register your safe upon purchase to activate full warranty benefits.

Product Specifications

Exterior Dimensions (HxWxD): 72″ x 42″ x 28″ (Add 3″ for handle)
Interior Dimensions (HxWxD): 67¾″ x 38″ x 23″
Usable Interior Dimensions: 67¾″ x 38″ x 20¼″
Maximum Long Gun Capacity: 45 (15/15/15)
Recommended Capacity: 33–39 long guns
Weight: 1,250 lbs