CYS Wood Rectangle Window Box Wood Planters with Removable Plastic Liner (Pack of 20) Water proof zinc liners, Wood thickness-8mm. Removable Plastic Liner included. Great for small plants, air plants or succulent. The best way to show off your simple gardening. The removable plastic 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 20. Dimension: H-3.75 inches, Open-4.5 inches x 9.25 inches. Color: Light Brown