Ergo Extender panels are designed to work with the Graf Ergo Raised Bed sold separately Item #645100 allowing for a variety of configurations. Made from recycled polypropylene with a beautful decorative wood-look texture. Set includes 2 panels 22 " each. Extends bed from 43.5" length to 65.5" length and inreases bed capacity to 84 gallons per set. Made in Germany 5 year warranty.