Exclusive to Floor & Decor, 7mm x 5 1/8in. AquaGuard Bamboo® Beachwalk Smooth Locking Water-Resistant Stranded Engineered Bamboo is a water-resistant bamboo flooring that is durable and stylish---it’s the next generation of bamboo flooring. Strong and water-resistant, AquaGuard Bamboo can go in every room in the house, including kitchens, mudrooms, and even full bathrooms. •Up to 30 hours of water resistance •Install up to 1,600 square feet—No need for transition molding •Quick and easy locking installation •Install floors in one day—Only 24 hours of acclimation time is required. •Can be installed over most existing hard-surface flooring. •This AquaGuard Bamboo® product is backed by a lifetime residential/ 15 year commercial warranty. It is recommendedto use Sentinel Protect Plus Underlayment for optimal sound absorption and moisture resistance or a standard vapor barrier like 6mil PE Film.