Door Lock with Interchangeable Core Cylindrical Lock, Ansi Grade 2 / UL 3H Fire Rate for Republic or Commercial Building in Matt Black Finish

SUMBIN Commercial Lock Superior Performance & Compliance: Professional-Grade Commercial Locking Solutions For facility managers, architects, and builders, specifying the correct door hardware is a critical decision impacting security, safety, accessibility, and long-term operational costs. Our portfolio of commercial grade​ locking solutions is engineered to deliver uncompromising performance in high-traffic environments. Every product, from a robust heavy duty door lock​ to a code-specific classroom door lock, is designed to meet rigorous standards. We proudly offer grade 2​ certified locksets as a cornerstone of our range, providing an optimal balance of enhanced security, superior mechanical durability, and commercial-grade construction that surpasses residential builds for demanding daily use. Security and life safety are non-negotiable in commercial design. Our fire rated lock​ systems are integral to passive fire protection strategies. These assemblies, including compatible cylindrical lock​ and lever lockset​ options, are tested to maintain the integrity of fire-rated doors and frames, helping to compartmentalize hazards. Many models carry the trusted UL lock​ designation, providing verified evidence of compliance with stringent safety standards. Beyond fire safety, we offer a complete suite of function-specific locks tailored to diverse operational needs. The storeroom lock​ secures supply closets and utility rooms, remaining locked externally but allowing free egress internally. The privacy door lock​ is ideal for restrooms or private offices, while the passage door lock​ provides a non-latching function for interior corridors. The classroom door lock​ addresses modern security protocols, allowing teachers to lock the door from the inside for safety while ensuring the lever is always free to exit, meeting both security and life-safety codes. Durability is engineered into every component. Our commercial door lever set​ and door lever set​ products feature reinforced levers constructed from solid materials like forged brass or stainless steel, resisting leverage-based attacks and built to withstand millions of cycles. The internal mechanism of our commercial door lock​ and cylindrical lock​ designs are precision-machined for smooth, reliable operation year after year, minimizing maintenance downtime. This heavy duty door lock​ construction ensures that our hardware performs consistently, whether securing a main entry with a commercial door lever set​ or managing access throughout an office with various lock functions. By choosing our commercial grade, grade 2​ and higher solutions, you invest in more than just a door lock; you invest in a system that enhances building security, ensures regulatory compliance, and delivers a demonstrably lower total cost of ownership through legendary durability and reliability for any commercial, educational, or institutional application.

• 1. Advanced Key Control with SFIC Technology:​ This SFIC Door Lock​ (Small Format Interchangeable Core Lock) is built around a premium IC Core Lock​ system, offering unparalleled flexibility and security. The innovative Interchangeable Core Door Lock​ design allows authorized personnel to quickly rekey or replace the core without removing the entire lock, making it the Best SFIC Lock​ solution for master key systems in offices, schools, and large facilities.
• 2. Commercial-Grade Durability & Versatility:​ Engineered as a heavy-duty Commercial SFIC Lock, this robust lock body is designed to withstand high-traffic use. It is available as a complete SFIC Lever Lock​ or a versatile SFIC Cylinder Lock​ core for integration into existing mortise or cylindrical hardware, providing a reliable upgrade path for enhancing access control across your property.
• 3. Simplified Maintenance & High Security:​ The core advantage of this Small Format Interchangeable Core Lock​ is effortless management. If a key is lost or security needs to be updated, simply use the control key to swap the core in seconds, minimizing downtime and locksmith costs. The high-security cylinder offers excellent resistance to picking, bumping, and drilling.
• 4. Universal Compatibility for Easy Retrofit:​ Designed for straightforward installation, this SFIC Lock​ core is compatible with a wide range of commercial-grade lock bodies and brands that accept the standard SFIC format. It’s the ideal, cost-effective solution to upgrade your current Commercial Door Lock​ system to a more secure and manageable interchangeable core platform.
• 5. Complete Professional Access Solution:​ More than just a lock, this system provides a professional-grade foundation for scalable access control. Perfect for property managers and facility directors, it streamulates key management and enhances security for storerooms, offices, and main entries, establishing a truly modern and manageable Interchangeable Core Door Lock​ infrastructure.