4518 - 1/2" X 1/2" OPAQUE WHITE POLYSTYRENE SIDEWALK

1/2" (12.7 mm) X 1/2" (12.7mm) SQUARES, X .026" (.65mm) GROOVE SPACING.
.040" THICK. 
LIGHT GROOVE FOR PAVING.
GROOVE SPACING IS CENTER TO CENTER OF GROOVES

1 sheet pack