TimberTech's TwinFinish product is designed for versatility and expression - with the topside displaying our authentic slip-resistant VertiGrain surface, and the bottom featuring a serrated texture that's ideal for contrasting accents, built-ins, benches and boxes. TwinFinish composite decking is sure to complement any outdoor space while allowing you to add your own personal style. TwinFinish is available in three popular colors - Cedar, Gray and Redwood, and features a 25-year limited warranty for residential applications.