The Velux SFDA skylight series offers glare-free, diffused natural light through a dual-layer polycarbonate dome system — featuring a white outer dome over a clear interior. Designed with a self-flashing frame, SFDA units install directly onto the roof deck without the need for additional flashing kits, speeding up installation while maintaining a clean, watertight seal. These skylights are perfect for bathrooms, corridors, and commercial interiors where softened daylight is preferred. Lightweight, UV-resistant, and built for longevity, the SFDA line offers a dependable and efficient daylighting solution with reduced visibility into the space below.