The company Frank + Ruth celebrates its 90th anniversary in 2016 and is the oldest electrical installation company in Heilbronn. It offers private and business customers a wide range of services. The company's motto is to offer a professional service with stateof-the-art technology and they wanted this to be reflected in the new premises. The lighting for the showroom and training room is high quality and innovative. The mix of different RZB luminaires - from the ultra flat Toledo Flat recessed downlight to the classic Flat Polymero in energy efficient LED version - give the ceilings an interesting look and provide a source of inspiration for customers and employees.