Watershed Funkisvilla Reference Info CategoryModern Windows MaterialWood/aluminum EnergiPlus, 3-layer Color outsideAnodized natur 01 (HAI) Color insideRAL 9010 Glass48 mm clear glass/Sunguard 51/28 Modern windows Modern funkisvilla with maximum glass area. Unobstructed view with large window sections, narrow frames and step pane. With such large windows, we recommend sun-blocking glass – here Sunguard 51/28 is used.