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Discover the opening version of the Skylux iWindow3, the perfect choice for superior insulation in flat skylights. This innovative flat skylight combines the compact, insulating PVC window with three-walled, super insulating HR+++ safety glass, resulting in an impressive Ug value of 0.5 W/m2K. Save up to 81% energy compared to a traditional double-walled plastic dome. Choose between clear, opal or sun-resistant glass and enjoy the comfort and versatility of the Skylux iWindow3 opening version.