In Denmark a questionnaire has been sent to Danish window manufacturers con-cerning their best practise products with respect to U-value and g-value and the results were presented on a Danish website. A translated version of the question-naire and list of BAT windows is shown on the Green Catalogue website. And in co-operation with the Danish Association on Sustainable Cities and Buildings, Fbbb this activity is now being expanded to other construction products (see : www.fbbb.dk (in Danish))
