Evergreen – #4502 2,1mm X 2,1mm OPAQUE WHITE POLYSTYRENE SQUARE TILE, 15 x 30cm

1/12″ (2.1 mm) X 1/12″ (2.1mm) SQUARES, X .017″ (.42mm) GROOVE SPACING.
.040″ THICK.
HEAVY GROOVE FOR TILE.
GROOVE SPACING IS CENTER TO CENTER