Greenbriar is a 3/8" thick by 3" wide engineered North American Walnut with eased edges and eased ends. The Scotchgard enhanced finish with Crystal Shield aluminum oxide allows for ease of maintenance and keeps your floor looking new longer. Engineered floors offer a great flexibility for installation as they may be installed over wood or concrete subfloors on all grade levels. Installation: Float, glue, nail, or staple. Greenbriar Walnut is offered in a natural color to accentuate the unique look of walnut. 28.25 sq. ft. per case. Features a 25 year limited finish warranty.