Based on its unique, Europe-wide expertise, DoubleCOOL guarantees first-class quality that extends to the field of door systems for refrigeration units. DoubleCOOLs claim is given weight by its parent company, the Polyplastic Group — a company which has been producing and manufacturing acrylic glass for over 60 years and is the undisputed market leader throughout Europe, especially in relation to the production and marketing of window systems in the recreational vehicle industry.