4517 - 3/8" X 3/8" OPAQUE WHITE POLYSTYRENE SIDEWALK

3/8" (9.5 mm) X 3/8" (9.5mm) SQUARES, X .021" (.53mm) GROOVE SPACING.
.040" THICK. 
LIGHT GROOVE FOR PAVING.
GROOVE SPACING IS CENTER TO CENTER OF GROOVES

1 sheet pack