PM-24 PAVEMENT MARKER: 1.3 square inches (8.4 sq. cm) of reflective area per side. Designed for use in construction zones and as a permanent Edge Line Marker. Approx. Size: 3/4" x 4" x 2"

TPM TEMPORARY PAVEMENT MARKER: 1.6 square inches (10.3 sq. cm) of reflective area on each side. For use in construction zones in conjunction with, or in place of, conventional tape or paint. Approx. Size: 3/4" x 4" x 4"