Hollon B1500 B-Rated In-Floor Foundation Safe
The Hollon B1500 Floor Safe offers discrete, heavy-duty security designed for concrete foundation installation in residential garages, basements, and commercial settings. Engineered with a commercial B-Rating burglary construction, this concealed vault flush-mounts into your concrete floor, making it practically invisible to intruders when covered by mats, rugs, or flooring while providing natural fire insulation from the surrounding concrete slab.
Built for maximum drill and force resistance, the B1500 features a heavy 1/2" thick solid steel door, a drill-resistant hardplate protecting the lock assembly, and a full-length dead bar. Security is driven by a UL Listed S&G Group 2 mechanical combination lock paired with an external relocker and a spring-loaded internal relocking device that triggers during physical tamper attempts. Operating the door is smooth and effort-free thanks to an integrated air-spring bar assist, and the entire unit is finished with a powder-coated protective shell for maximum rust and wear resistance.
Key Security & Design Features
- B-Rated Foundation Safe: Specifically engineered for encasement in concrete floor foundations for total physical protection and stealth storage.
- 1/2" Solid Steel Door: Heavy-gauge solid steel door construction built to withstand severe physical attack, prying, and impact.
- UL Listed S&G Group 2 Combination Lock: Commercial-grade mechanical dial lock provided by Sargent & Greenleaf for lifetime reliability.
- Dual Relocking Security System: Features both an external relocker and a spring-loaded internal relocking device that lock down the boltwork during burglary attempts.
- Drill-Resistant Hardplate: Special hardened steel plate shields the critical mechanical locking mechanism against drill attacks.
- 5 Solid Steel Locking Bolts & Full Dead Bar: Heavy-duty 5-bolt system combined with a full-length dead bar to prevent hinge-side intrusion.
- Air-Spring Door Assist: Built-in air-spring bar allows the heavy 1/2" solid steel door to open smoothly and remain upright during access.
- Durable Powder-Coated Finish: Premium powder coating protects the safe's exterior and interior from moisture, corrosion, and wear inside concrete foundations.
Technical Specifications
| Model | B1500 |
| Brand | Hollon Safe |
| Safe Type | In-Floor Foundation Safe / Concealed Burglary Safe |
| Burglary Rating | B-Rating |
| Door Construction | 1/2" Thick Solid Steel Door |
| Lock Type | UL Listed S&G Group 2 Mechanical Combination Lock |
| Locking System | (5) Solid Steel Locking Bolts + Full Length Dead Bar |
| Relocker Protection | Spring-Loaded Relocking Device & External Relocker |
| Lock Protection | Drill-Resistant Hardplate |
| Door Assist | Air-Spring Bar for smooth, easy opening |
| Exterior Finish | Durable Powder Coated Protection |
| Exterior Dimensions (H x W x D) | 14-9/10" x 13-1/2" x 11-4/5" |
| Interior Dimensions (H x W x D) | 12-9/10" x 10-9/10" x 6-9/10" |
| Weight | 79 lbs |
Frequently Asked Questions
How is the Hollon B1500 floor safe installed?
The Hollon B1500 is designed to be installed flush into a concrete slab or foundation. A hole is excavated into the concrete foundation, the safe is set into place, and fresh concrete is poured around the outer body to encase it securely.
Is the Hollon B1500 floor safe fireproof?
While B-rated safes are primarily rated for burglary protection, installing a safe inside a surrounding concrete floor foundation provides high natural fire insulation, protecting internal valuables from ambient thermal damage during a fire.
How thick is the steel door on the Hollon B1500 safe?
The Hollon B1500 features a heavy 1/2" thick solid steel door designed to prevent prying, drilling, and mechanical attack.
What lock comes standard on the Hollon B1500 in-floor safe?
It comes equipped with a UL Listed S&G Group 2 dial combination lock manufactured by Sargent & Greenleaf, reinforced by a drill-resistant hardplate and dual relockers.
What does the air-spring bar do on the B1500 safe?
Because the 1/2" steel door is heavy, the internal air-spring bar acts as a hydraulic lift assist, making it easy to open and holding the door open safely while accessing your items.
What are the exterior and interior dimensions of the B1500?
Exterior dimensions measure 14-9/10" H x 13-1/2" W x 11-4/5" D and interior dimensions measure 12-9/10" H x 10-9/10" W x 6-9/10" D. The unit weighs 79 lbs.
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