DDL Group operates in the Architectural Openings Marketplace striving to be the leading provider of architectural, security, fire and life safety product solutions. Today our full circle experience provides industry related design services including specification writing, consulting, inspections, product solutions sales & manufacturer relations. Our scope of expertise includes Doors, Frames, Builders Hardware, Security, Electric Locking Systems, Access/Egress Control‐ wired and wireless, Building System Monitoring and Integration.