Dream Home - St. James 10012014 12mm Nantucket Beech Laminate Flooring, 21.19 Square Feet per Box. 21.19 square feet per box. Prices and weights listed are per box. Laminate Flooring Thickness: 12 mm; Width: 5 1/4"; Waste: 5% Hardness Rating: N/A; Janka Rating: N/A; Finish Warranty: 30 years Botanical Name: N/A; Trade Name: N/A