Twenty20's greatest strength is our people. We have a dedicated team of industry experts that are committed to delivering you comprehensive security and automation solutions, supported by top-notch customer service and ongoing technical support. The Twenty20 Leadership team brings decades... Read More
DoorKing, Inc. (we are also known as “DKS”) was established in 1948 and is one of the country's leading manufacturers of telephone entry systems, vehicular gate operators, parking control products and access control systems in the United States. DoorKing was the first company to use... Read More
Aeroturn designs, manufactures, tests, delivers and installs the world’s only Zero-Maintenance standard and custom turnstiles for government, educational, industrial, commercial and private organizations. Read More