... )PU lacquered or Unfininsed 2)Finger jointed We offer wood stair landing,solid wood stair treads,interior treads,1)PU lacquered or Unfininsed2 ... thickness we make are: 18mm, 21mm, 28mm, 33mm, 45mm etc. 3) The surface can be PU lacquered or Unfinished4)The treads ... 6) Flat surface or brushed or handscrapped surface7) Packing : Cartons with wooden box wood stair landing,solid wood stair treads