Modern Home Raised Garden Bed kits are a new modular design that will simplify your gardening. Constructed of UV-Resistant High Density Polyethylene (HDPE), each kit includes 4 panels allowing you to quickly snap together a garden bed in minutes. The HDPE material will not crack, rot, warp or splinter like traditional wooden garden beds. The walls will absorb heat from the sun and help retain warm temperature needed for your plants to develop. Offered in 2 sizes, the Modern Home Raised Garden Beds are stackable with interlocking supports allowing you to make deeper planters as well. Stacking 2 high will give you nearly 2 feet tall outer walls. Backed by the manufacturer 5 year limited warranty, each kit is durable and designed to last for years. the 4'' x 2'' kit measures 48.6" x 23.6" x 11.8". The 4'' x 4'' kit measures 48.6" x 48.6" x 11.8".