Powemaxx GLX-CTH 8" XXL Air Cool Tube Grow Light Deluxe Glass Cylinder with Hood Reflector Dimension: 31.5"L x 31.5"W x 10"H Air duct: 8" Socket: Ceramic E39 Mogul Base Glass with German Aluminum Built-in 15' heavy duty lamp cord with ceramic mogul socket 5 Year Manufacturer Warranty