The casement + fixed window combination offers the ideal balance between ventilation, natural light, and energy efficiency. The operable casement sash opens outward on precision hinges, providing excellent airflow and easy cleaning from inside the room. Meanwhile, the fixed panel maximizes unobstructed views while maintaining exceptional thermal insulation. Both sections are built with high-quality aluminum or PVC profiles, depending on project requirements, and paired with low-E double glazing to reduce heat loss and improve comfort. Multi-point locking ensures a tight seal against air and water infiltration, making this window highly suitable for energy-efficient buildings. The clean, modern frame lines make it compatible with various architectural styles—from contemporary homes to commercial spaces. KDSBuilding’s casement + fixed window is a versatile solution that enhances visual appeal while delivering long-term performance and durability.