Constructed of polyethylene plastic with rust-resistant zinc-coated screws, the Lifetime raised garden bed will not rot or attract insects like raised garden beds made out of timber. This kit contains one 4x4 garden bed. Four interlocking panels create the sidewalls. A weed barrier (not included) creates the bottom of the garden box to prevent weeds and underground pests from taking over your garden. With a raised bed you"ll have the advantage of being able to customize the soil to your plants. You won"t be at the mercy of the natural soil conditions in your area. The soil in traditional gardens becomes compacted from being walked upon, which slows drainage and necessitates rototilling. Not a problem with a raised bed; In a raised garden bed, plant placement is done in a style called square foot gardening. Square foot gardening allows you to grow five times as many plants because it uses 20-percent of the space of traditional row gardens. Last, but not least, you"ll also appreciate that the interlocking panel design gives you the option of relocating your garden box if you should move or just simply want to change your landscaping design. *These plastic garden bed panels contain no BPA. The Lifetime Raised Garden Bed Kit includes an informative Raised Bed Gardening Guide with helpful advice, tips, and tricks on plant spacing and watering techniques. Note:You will need a Weed Barrier to cover the bottom of your Garden Bed, and 16 cubic ft of Soil Mix. Soil Mix should be three equal parts of vermiculite to retain moisture, peat moss to make the soil light and loose for drainage and proper water retention, and compost to provide the nutrients your plants need to thrive. Assembled in the USA with US and imported parts.