Aluminum Brackets and Finials - All brackets and finials of our black curtain rod are made of aluminum, ensuring long-lasting durability even in humid environments,no worries about rust stains or degradation over time. Extendable Curtain Rod - Lwiiom curtain rod for windows 16 to 86 inch can be extended and adjusted to fit different window sizes, you can easily customize it to perfectly fit your window dimensions. Ceiling Mounted and Wall Mounted - The drapery rod can be installed on walls or ceilings, making it convenient for any space and providing a seamless look. Diameter of Curtain Rod - The whole rod set uses 2 sizes of rods, namely the outer rod with a diameter of 1 inch and the inner rod with a diameter of 7/8 inch. Whether used as a blackout curtain rod or a decorative curtain rod, It supports a range of curtain styles and weights and provides stability and secure hanging. Versatile Usage: Suitable for sliding doors in bedrooms or living rooms, kitchen windows,study windows and more, this window curtain rods can be used in various areas of your home. curtain rod