Best quality sun tunnels. The Sunlume Pitched Slate Roof Diamond Light Tube natural daylight system directs sunlight into a room from the roof level. The Sun Tunnel collects daylight using a diamond dome, a silverized PVD (Physical Vapor Deposition) coated mirror-finished aluminum tube with a ceiling diffuser to evenly distribute the light around the room. Sunlume Diamond Sun Tunnels are suited to almost any application and have been installed anywhere from residential bedrooms to the Olympic Handball Arena in London. This pitched roof SUNLUME skylight tube has been specifically developed to suit standard felt, asphalt, or membrane roof finish.