 TEMPLE, Ga.--BUSINESS WIRE--Janus International Group, Inc. NYSE: JBI Janus, a global manufacturer and supplier of turn-key building solutions and new access control technologies for the self-storage and other commercial and industrial sectors, today announced it has closed the previously announced acquisition of DBCI, a manufacturer of steel roll-up doors and building products for both the commercial and self-storage industries and a part of Cornerstone Building Brands NYSE: CNR Co 