Yale Locks & Hardware has provided dependable security since 1840. Yale Locks & Hardware is an ASSA ABLOY Group company with plant operations in Berlin, CT. The company offers a broad continuum of door hardware and locks including an extensive range of mid-tier commercial products as well as a wide variety of residential hardware options. This includes an extensive range of mortise and cylindrical locks, exit devices and door closers.

Zenitel systems interface with other security systems including CCTV, access control and alarm for a comprehensive security solution.

Zero International designs and manufactures a wide range of specialized sealing systems for doors and windows. Zero International also provides technical support for both the specification and application of products. Zero International supports all of their product lines using extensive in-house production capabilities and ingenuity to solve problems.