Oak Chestnut Select Matte hardwood flooring (Coswick™) comes with factory-applied CosNanoTech+ lacquer Matte finish that provides exceptional surface protection. This innovative finish is distinguished by particle elasticity and superb wear resistance, and comes with a 25 year residential warranty. Oak Chestnut Select Matte solid flooring can be installed on or above grade using staple-down method. Oak Chestnut Select Matte engineered flooring can be glued down or floated on, below or above grade. The product comes with a Lifetime Structural Warranty.