POLVANC is setting a new standard in home design. Customers looking for Zero Energy and Passive House design are offered cost effective, high-performance Tilt & Turn European super energy efficient windows. The JUMBO window is a solution for sustainable design, limiting CO2 emissions and saving your money on heating bills. They combine the highest quality performance of a heat transfer coefficient Uf = 0.92 W/m²K, safety and comfort for your home. The secret to success lies in construction details. Above average width of 83mm and six chambers inside the frame combined with precisely designed triple glazing and thermal spacers are well suited for even the most demanding climatic conditions.