Puzzletown Replacement Green Playboard Bases Grid Piece Part Large 12" X 12"

Size: Square 12" X 12" 3/8" tall
Material: hard plastic

Rectangular green hard-plastic playboard base with raised squares creating grooved lines to support woodboard/puzzle pieces.
It has 8 long grooved lines and 8 short grooved lines.
The outside edge squares have a small square hole/opening to attach ramps