Klearwall triple pane windows and doors are engineered with European innovation and constructed using the highest quality materials. Triple glazing of windows and doors is increasing in importance as the USA becomes more energy efficient in its approach to construction. Passive house components are an important development in this process due to their low energy features. An important aspect of passive houses are passive house windows and passive house doors. Passive house windows and doors are usually triple glazed. Triple glazed windows are essential in passive house construction because they prevent heat loss. All Klearwall Passive house windows are certified by the Passive House Institute, Germany and are suitable for all types of passive house and non-passive house buildings. Our triple pane windows exceed what is expected for passive house windows providing R-values as low as 9.8 hr.ft².˚F/BTU. Whether you need triple glazed windows for a passive house or non-passive house, rest assured that klearwall windows are a high quality window product that guarantees many years of comfortable care-free living.