Woodland Scenics ST1419 Profile Boards.

Use the interlocking profile boards and connector pieces to create the layout perimeters and mountain profiles. Place boards end-to-end or stack to any height using the 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 inches (length) by 8 inches (height) (203mm by 609mm). The thickest section is 1 inch (25 mm) and the thinnest section is 1/2 inch (12mm).