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Expertise you can trust.
Security Staff with over 175 years of combined industry experience
Security Specialists since 1950
Certified Medeco Security Center
Total Door Security Solutions
Coast-to-Coast National Security Solutions
The SLD Promise
No matter the security concern, regardless of how complex, SLD goes above and beyond to provide our clients with the best solutions to their needs. Our Security Specialists have the experience, knowledge and ability to solve any issue.