VELUX 10" Double Strength Acrylic Rigid Low-Profile Sun Tunnel Tubular Skylight Low profile flashing provides an integrated look with the roofline. 99.99% silver reflective layer with a 20-year tunnel warranty, total reflectance +98 Percent. Energy Star labeled for high efficiency. Easily installed usually under 2-hours. Designed to install on Shingle/Shake roofs with 15 to 60 degree pitch.