Description Proline couples the 18″ x 18″ tile with their most popular texture of Roman Slate for a perfect combination. Roman Slate, designed for Caesar’s Palace in Las Vegas, is consistently the most selected texture. Looking for an accent piece, check out our Acanthus Leaf Border Art stamp or the many other Border Art and Border Tools Proline offers. Stamp size 18″ x 36″. Package savings reflected in price.