Evergreen – #4504 4,2mm X 4,2mm OPAQUE WHITE POLYSTYRENE SQUARE TILE, 15 x 30cm

1/6″ (4.2 mm) X 1/6″ (4.2mm) SQUARES, X .025″ (.62mm) GROOVE SPACING.
.040″ THICK.
HEAVY GROOVE FOR TILE.
GROOVE SPACING IS CENTER TO CENTER