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Fort Knox Safes® Vault Door OS8240
Specs
Exterior Dimensions | 85" x 45" |
Rough Opening | 82" x 40" |
Weight | 1330 lbs. |
Door edge thickness | 5/8″ |
Frame thickness | 3/16″ |
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Fort Knox Out-Swing Vault Door 8240
Big Protection in a Manageable Size
The Fort Knox 8240 Out-Swing Vault Door is designed for homeowners who want powerful, vault-level security without overbuilding. With a rough opening of 82" x 40", this model fits common residential openings while offering full 180° swing access—making it ideal for vault rooms where interior space is tight.
Perfect for firearm collections, heirlooms, emergency supplies, and records, the 8240 is a secure entry solution that adds function and peace of mind to your home or small business.
Key Benefits
- 3/8" Steel Plate + 5/8" Door Edge: Multi-layer fire door resists heat, prying, and impact.
- 24 Solid Locking Bolts: 1.5” steel bolts with patented Star Corner Bolts for full perimeter engagement.
- Dual Thermal Fire Seals: Fire-rated for 90 minutes at 1680°F with full insulation and frame reinforcement.
- Full 180° Opening Radius: External EasyGlide™ hinges allow wide-open access for large or awkward items.
Specifications
- Rough Opening: 82" H x 40" W
- Exterior Frame: 85" H x 45" W
- Frame Thickness: 3/16"
- Weight: 1330 lbs
- Locking Bolts: 24
Includes: Hinge caps, pull handle, interior release handle, and 5-spoke clutch drive handle.
📞 Contact Northwest Safe to design and install your secure vault entry today — Serving WA, OR, ID & MT
Vault Door Buying Checklist

Delivery & Installation
Many big box stores only offer curbside delivery. In theory, this can seem like a really affordable option. After all, a few buddies, a case of beer, and a heavy-duty project is a great combination — right?