Total Security from the Frame to the Cloud.
St Louis' trusted partner for professional door installation, high-security locksmithing, and smart monitoring since 1995.
31 Years in Business
Family Owned & Operated
24/7 Emergency Service
Industrial-Strength Solutions for Every Entryway.
We provide end-to-end services, from physical door frames to the encrypted software that manages them.
Commercial Doors & Hardware
A commercial door is a complex system that must balance security, durability, and legal compliance. We offer high-quality installation and repair for hollow metal doors, aluminum storefronts, and architectural wood doors. Our experts ensure every component—from heavy-duty hinges to automatic door closers—is calibrated for high-traffic environments.
Beyond simple entry, we specialize in ADA-compliant hardware and Life-Safety code requirements. This means your exit devices and panic bars are guaranteed to function during an emergency, protecting your occupants while shielding your business from liability. Whether it’s weather-stripping to lower energy costs or installing reinforced frames, we build entrances that last.
Advanced Access Control
Modern security requires knowing who is in your building at all times. Our electronic access control systems replace traditional keys with secure, encrypted credentials such as smart cards, mobile fobs, or biometric scans. By utilizing cloud-based management, business owners can grant or revoke access permissions instantly from a smartphone app, eliminating the need to rekey locks when an employee leaves.
These systems provide a detailed audit trail, giving you a digital log of every entry attempt. We integrate these solutions with your existing security infrastructure, including electric strikes and magnetic locks, to create a seamless experience. From a single-door retail shop to a multi-site corporate campus, we provide the “digital gatekeeper” your facility deserves.
High-Security Locksmithing
True security begins with the cylinder. We provide patented key control systems that prevent unauthorized key duplication at big-box stores. This ensures that only authorized individuals can request additional keys, giving you total control over your key inventory. Our locksmiths are experts in designing and maintaining Master Key Systems, allowing a business owner to carry one “Grand Master” key while employees hold keys restricted to specific zones.
Our 24/7 mobile locksmith fleet is equipped to handle everything from emergency lockouts to complex rekeying projects. We work with industry-leading brands like Schlage, Medeco, and Von Duprin to provide Grade 1 hardware—the highest rating for strength and security. When a lock fails or a security breach occurs, our technicians provide the rapid-response craftsmanship needed to restore your perimeter immediately.
A Legacy of Security Built on Local Trust.
Family-owned and operated since 1995, we combine old-school craftsmanship with next-generation security technology.
Certified Expertise
Our factory-trained master technicians are as skilled at pick-resistant mechanical locksmithing as they are at programming complex, cloud-based IP cameras and integrated security systems.
Local Roots
Founded by Charlie Duncan in 1995, we offer St. Louis businesses a level of personal accountability and regional expertise that national conglomerates simply cannot match.
24/7 Rapid Response
We treat security failures as business emergencies, deploying a fully equipped mobile fleet throughout the metro area to provide immediate on-site repairs for break-ins, lockouts, or hardware malfunctions.
Integrated Advantage
By managing the entire entryway ecosystem—from physical hinges to software-driven access alerts—we eliminate contractor overlap and ensure your hardware and technology work in perfect harmony.
Specialized Security for Financial Institutions
Protecting high-value assets with military-grade precision and discretion.
CSL is the region’s trusted partner for specialized banking equipment, offering expert maintenance and installation for vault doors, safe deposit boxes, and night depositories. We provide the technical mastery required to service time locks and high-security safes, alongside the installation of ballistic-rated glass to ensure teller and staff safety. When your assets require the highest level of protection, our certified technicians deliver solutions that meet the most stringent regulatory and security standards.
What Our Clients Say
We take pride in delivering reliable commercial door solutions and dependable service. Here’s what our customers have to say about working with CSL Doors & Security.
Secure Your Business Today
Get a professional security audit or a free project estimate.
Don’t leave your facility’s safety to chance. Partner with St. Louis’s commercial experts for integrated door and technology solutions. Contact Commercial Safe & Lock now to secure your property from the ground up.
About This Site
We provide services to help protect and secure your home or business. We offer commercial, industrial, and financial institution locksmithing, door and frame tear out and replacement, light construction projects, access control systems, home security and more.
Find Us
Address
5124 Warren Road
Imperial, MO 63052
Hours
Monday—Friday: 8:00AM–4:30PM
Saturday & Sunday: CLOSED