Get the most out of your outdoor space with this 20-inch x 18-inch black heavy duty plastic square planter box. This classic look is timeless, and doesn’t require much upkeep to keep plants healthy. Made of polyethylene, this solid color planter is ready to let your plants and flowers be the star of the show. The practical, straight-edged shape of this planter is perfect to add clean lines and good looks to your backyard. Help your favorite plants live longer with this planter, which includes holes for optimal drainage. Marking your territory. Use this planter to let the world know that you’re proud of your plants. Even if you have a small space, planters can help still bring the garden to you. 20.00-inch h x 18.00-inch w x 18.00-inch d.