Floating laminate wood flooring with attached Silent Step Plus pad. Can be installed above or below ground level. Glueless click installation is perfect for do-it-yourself projects. Edges and ends are square. 20 year residential warranty. Each case contains 21.12 sq ft or 8 planks that are 7.99" W x 47.56" L x 8 mm thick. Do it Best Corp. stocks 3 grades of underlayment from MP Global Products LLC, vendor No. 1666, at all retail service centers.4 matching transitions are also stocked. Look for: T-molding, hard surface reducer, stairnose, and quarter round.