Package includes two Profile Boards and two Connectors. Use the interlocking Profile Board pieces to create the perimeter of the layout and mountain profiles. Place Boards end-to-end or stack to any height using the included Connectors. Trim Profile Boards with the Hot Wire Foam Cutter or a Foam Knife and glue in place with Foam Tack Glue or the Low Temp Foam Glue Gun and Glue Sticks. Each Board measures 24" l x 8" h