Glo A7 triple-pane aluminum series was carefully selected for the Elk Ridge Passive House because of their High Solar Heat Gain Coefficient which allows the home to absorb free solar heat, and a low U-value to retain this heat once the sun sets. The A7 windows and doors were an excellent choice for durability and the ability to remain resilient in the harsh winter climate. Glo’s European hardware ensures smooth operation for fresh air and ventilation.