Wattage: 40W, Type: T5 Circular Fluorescent, Color Temp (Kelvin): 4100K, Lumens: 2800, Width: 11.0 in. Overall, Diameter: 0.63 in. Tube, Base Type: G10Q (4-pin square pattern), Average Life Hours: 12,000, Color Emitted: Cool White, Features: 280mm outside diameter --- We combine shipping for multiple items! - In other words each additional item ships for free *applies to most items* - This includes similarly sized, separate SKUs; combined into one flat rate priced package. Simply add all your items to your cart and begin the checkout to see the combined shipping cost.