1) Type: 11 layers engineered flooring 2) Thickness: 15mm(top layer 0.6mm-3mm) 3) Dimensions (L x W): 910 x 125mm 4) Species: Oak, teak, cherry, Canadian maple. Suanzhi. An engineered hardwood floor is comprised of several layers; The top layer is real hardwood, which means the floor you stand on is the same genuine hardwood you always dreamed of owning. Because the other layers in an engineered hardwood floor are made of plywood or high density fiberboard, the engineered hardwood resists the tendency of solid hardwood to expand and contract with changes in humidity and temperature. Engineered hardwood flooring can also be installed over radiant heat.