• L C N Closers

• Leatherneck Hardware

• Leonard Lumber Company

• Locknetics Security Engrg.

• M&M Design

• MS SEDCO

• Mahon Door Corp.

• Maximum Security Products Co.

• McKeon Rolling Steel Door Co.

• McKinney Products Co.

• Medeco Security Locks, Inc.

• Mike Green Fire Equipment Co.

• Nel-Tech

• Northern Computers

• O'Neal Coatings Inc. Artist and Gilders Studio

• OPTEX USA

• OSI Security Devices, Inc.

• Onity

• PDQ Industries

• Perma-Vault Safe Corp.

• Pulnix America

• R.R. Brink Locking Systems

• Rofu International Corp.

• Rutherford Controls

• Rutherford Controls Ltd.

• SDC Security Door Controls