Engineered Hardwood Flooring American Black Walnut 2mm or 3mm or 4mm dry sawn cut wood layer 6"width × 3/4" (18mm) thickness × RL, full length 17%-50% Micro-beveled Ultra Matte UV Finished Tongue and groove profile, nail down installation with glue assist is recommended Limited 35 years finish warranty, lifetime structural warranty Hickory must not be installed over radiant heat systems Hydronic radiant heat compatible Indoor Air Quality Certified: FloorScore CarbⅡ Select&Better, select, Character
