CYS Wood Cube Box Wood Planters with Removable Zinc Liner (Pack of 6) Wood thickness-8mm, Removable Zinc Liner included. Great for small plants, air plants or succulent. The best way to show off your simple gardening. The removable zinc liner make it easier to manage your plant. With its natural appeal, this box is a great container for country style garden decor. Pack of 6. Dimension: H-5" Open-5" x 5". Color: Natural Wood.