This Mainstays 30" rectangle metal window box is perfect for displaying plants around your home. The metal window box is constructed in a decorative flat metal motif with a durable powder-coated black finish, that won't rust. It comes with a coco liner, that aerates the soil, along with mounting hardware for placement under windows, on deck rails or against walls. The liner is compostable at the end of the season and replacement coconut fiber liners are sold separately. This coco window box is ready to be planted and displayed. It is perfect for window displays and porch decoration. This window box is ideal for plants with shallow roots like herbs, petunias, pansies, zinnias, succulents and more. The basket measures 30" wide by 5" deep by 8.5" tall. The liner is made from all natural, eco-friendly coconut fibers.