Urban Hardscapes by Indiana Limestone Wall Caps add a unique appearance to any wall design and are the ideal choice for those looking to emphasize sophistication in their landscape design vision. Available in standard gray and full color blend, Indiana Limestone wall caps complement a full range of natural stone and man-made materials. This remarkably strong natural stone piece guarantees a classic appearance for years to come. Indiana Limestone wall caps are available in 2-1/4? and 3? thicknesses and you can choose between a smooth or rock face finish to match the architectural style you desire.