Combining a modern high-quality wood look with weather-resistance and durability, this raised bed is perfect for extending your gardening season. The injection molded sides easily join together to form a stable raised bed. The BPA-free plastic is 100% recyclable and unlike wood, there is no need for painting and no splintering or rotting! Aluminum braces across the middle prevent the sides from bowing out. Includes a 4mm polycarbonate and aluminum cold frame. Add a Timber Raised Bed Extension layer for additional bed height, sold separately.