Bloem Modica Rail Planter 18 in. is a high-quality planter that is specially designed to fit all standard railings with 2 inches to 6 inches width. It features new and fashionable design trendy colors. Each planter has great soil capacity and it provides a wide planting area. It also has a water containment system at the bottom to offer enough supply of water for your plants. Get one now to decorate your plants and flowers in a stylish way. This rail planter has an outside diameter of 18 inches.