About the Velux TGF 014 0000 Sun Tunnel, 14" Tubular Skylight Acrylic Dome w/LowProfile Flashing Flexible TunnelThe Velux 014 0000 TGF Sun Tunnel Tubular Skylights with LowProfile Flashing and Flexible Tunnel are designed to make your housing space brighter with energyefficient and natural light. The Velux skylights are best installed in rooms with flat ceilings: bathrooms, closets, and hallways. The Velux 014 0000 TGF skylight has flexible tubing that can be simply installed around attic obstructions. The Velux Sun Tunnel Tubular Skylight also has the original onepiece low profile metal flashing, which is parallel and blends into the roofline.