Stack two same-sized units or pair with a larger square bed to create flexible garden layouts and added planting depth. (4' x 4' Stackable Garden Bed sold separately, ASIN: B0CZ659L15) Offers two versatile sizes to fit your gardening needs; the Rectangle model holds 5.67 cubic feet of soil, while the Square model accommodates 11.99 cubic feet, perfect for larger garden projects; both are ideal for a variety of plants. Quick & Simple Assembly – Minimal assembly required with included hardware; ready in minutes with no complex tools needed 10‑Year Warranty – Built to last with sustainable materials and backed by a manufacturer’s guarantee for peace of mind. U.S. Designed. U.S. Supported. 100% Flower Approved.