Discover the fixed version of the Skylux iWindow3, the perfect choice for superior insulation in flat roof windows. This innovative flat roof window combines the compact, insulating PVC frame with super insulating safety glass (triple glazing HR+++), resulting in an impressive Ug value of 0.5 W/m²K. Save up to 81% of energy compared to a traditional double-walled plastic skylight. Choose between clear, opal or solar control glass and enjoy the comfort and versatility of the Skylux iWindow3 openable version.