Security Solutions
Doors, Frames & Hardware
Commercial-grade door and frame installation, hardware upgrades, and metal doors for facilities that demand lasting security and code compliance.
NSI Security supplies and installs commercial hollow metal doors, frames, and finish hardware for a wide range of facilities — from office buildings and schools to government installations and industrial plants. Our certified technicians ensure every opening meets applicable fire, life-safety, and ADA codes while integrating seamlessly with your access control.
Our Door & Hardware Solutions
Hollow Metal Doors & Frames
Heavy-gauge hollow metal doors and welded frames engineered for high-traffic commercial and government openings, available in custom sizes and configurations.
Finish Hardware & Closers
Complete hardware packages including locksets, exit devices, door closers, hinges, and coordinators from leading manufacturers — specified and installed to code.
Fire-Rated Assemblies
UL-listed fire door assemblies with proper labeling, gasketing, and hardware to satisfy fire marshal inspections and insurance requirements.
ADA-Compliant Openings
Accessible hardware solutions including low-energy operators, lever handles, and compliant thresholds ensuring every opening meets ADA and local accessibility codes.
Access Control Integration
Electric strikes, magnetic locks, and electrified hardware pre-wired and coordinated with your access control system for a seamless, secure opening.
Repair & Preventive Maintenance
On-site door and hardware repair, adjustment, and scheduled maintenance programs to keep every opening operating safely and reliably year-round.
Who We Serve
Need Doors, Frames, or Hardware?
Contact NSI Security Systems for a free site assessment and hardware specification consultation.