Ultima Energy PVC window is recommended for rooms located in a noisy neighbourhood or facing the street, as well as rooms where increased resistance to humidity and dirt is required such as bathrooms and kitchens, etc. The triple-pane construction of the Ultima Energy PVC is the perfect combination of 3 panes, with pane coating and filled with krypton gas to create improved energy efficiency for the whole window. Ultima Energy PVC has excellent Uw parameter: 1.0 W/m2K. Krypton filled pane construction which conducts heat by 46% less than the most frequently used alternative Argon.