A box of 6 Stackable Sorting Trays! Puzzle Sort & Go! Sort your puzzle pieces, link (all blue) trays for easy viewing, stack trays for compact organization, and store trays in the box for transport. For puzzles up to 1,000 pieces. By Ravensburger. Came from Barnes & Noble. Comes from a smoke-free / pet-free home. Porch pickup. Cash or Venmo. Email or text.