• 8 qty. - 60in (5 ft.)
• 8 qty. - 18in.
• 8 qty. - 12in.
• 8 qty. - 6in.
  

Assemble all the 18-inch, 12-inch, and 6-inch pieces with the corners and "T" junctions like in the picture.  Start with the 12-inch piece in your left hand and slide it into a "T" on its right side.  then slide a 6-inch into the right side of the "T", and next slide another "T" on to the 6-inch piece. Then last, slide the 18-inch into the right side of the "T".  Make 8 of these exactly the same.

(Click for larger image)

(Click for larger image)