These cube and rectangle shaped fiberglass planters offer sharp straight edges for a sleek and modern look. Choose from a smooth matte black and grey color, or a textured true stone look. We recommend cube shaped planters for their minimal and sleek design. They will be the perfect complement to any outdoor deck, balcony, rooftop, or terrace. They are also ideal to complement any modern indoor space. Browse our collection of cube shaped planters and rectangle shaped planters below.