MB12 18" Large Surface Bolt | Rocky Mountain Hardware

MB12 18" Large Surface Bolt - Professional Grade

The MB12 18" large surface bolt delivers exceptional security for demanding applications. Featuring robust rectangular 4" mounting brackets and a precise 3" throw mechanism, this professional-grade hardware provides reliable protection for various door applications.

Professional Features

• Quality Construction: Extra-large 4" mounting brackets
• Quality Construction: 3" throw for maximum security
• Quality Construction: Heavy-duty applications
• Quality Construction: Ultimate security solution

Ideal Applications

Perfect for maximum security doors, vault doors, high-security commercial. Trusted by contractors, architects, and designers for projects requiring reliable, long-lasting door security. For alternative sizes, consider our MB12 24" surface bolt, MB12 24" surface bolt.

Technical Specifications

Model: MB12 18"
Bolt Size: 1"
Throw: 3"
Mounting: Rectangular 4" Mounting Brackets
Strike Included: SB1

Complete Surface Bolt Solutions

The MB12 is part of our comprehensive surface bolt collection. Browse our complete commercial door hardware selection for all your architectural hardware needs.

Why Choose Rocky Mountain Hardware

For over 30 years, Rocky Mountain Hardware has crafted premium architectural hardware using recycled bronze and traditional techniques. Each surface bolt is individually made in Idaho with attention to detail that ensures generations of reliable performance.

Available Finishes: Multiple patina options to complement any architectural style. Warranty: Lifetime limited warranty on all components.