VELUX VSS C04 2004 Skylight, 21 1/2" W x 38 3/8" H " Solar Powered Fresh Air-Venting Deck-Mount w/Laminated LowE3 Glass

About the Velux VSS C04 2004 Skylight, 21 x 377/8" Solar Powered Fresh AirVenting DeckMount w/Laminated LowE3 GlassThe Velux VSS C04 2004 21 x 377/8 in. Solar Powered Fresh Air Venting DeckMount Skylight with Laminated LowE3 Glass. The Velux VSS C04 2004 Fresh Air Venting DeckMount Skylights are made to help you save the energy consumption, as they use only the power of the sun. You need only solar energy to control the light in a room. The Velux skylights offer proper ventilation of your rooms. Brand new solarpowered design of Velux skylight features a solar panel that uses the daylight to recharge a highly efficient battery powered operator and control system. solar panel can work even on cloudy days and with indirect light, as it does not need to be exposed to direct sunlight to function.