The KEURIG K-Duo 5100 Coffee Maker Replacement 12 Cup Water Tank Reservoir is a clear plastic water tank with a black lid, designed specifically for Keurig coffee makers. This 12 cup capacity reservoir is easy to install and perfect for replacing a damaged or worn out water tank. The item is lightweight at 1 lb and has dimensions of 6 1/4 inches in height and depth, and 11 inches in length. This replacement part ensures that your Keurig coffee maker continues to function at its best, providing you with fresh, flavorful coffee every time.