2m double curtain rod is a window treatment accessory designed to hold two sets of curtains. It typically consists of two separate rods that are mounted parallel to each other on a wall or window frame. This design allows you to hang both sheer curtains and heavier drapes or curtains on the same window, providing versatility in light control and privacy. The double rod system often includes brackets for installation and can be found in various materials, styles, and finishes to match your interior decor.