This ECOFLEX 48 in. Rectangular Window Planter is perfect for flowers-plants-herbs. Can be painted for a custom look. These attractive, durable window boxes are also eco-friendly. Easily assembled in 5-minutes or less and no tools are required. Made of ECOFLEX material. ECOFLEX is a proprietary formula that incorporates reclaimed wood and plastic into the material that allows the product to be eco-friendly and a great value as it will outlast most other products. ECOFLEX is 100% non toxic and does not absorb moisture. There is nothing in ECOFLEX that could harm your garden or animals. Resistant to warping, twisting and fading. 10 year limited manufacturer's warranty.