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• CornerStone needs no high cost fiberglass pins or plastic clips that are labor intensive to install.

• CornerStone has two high strength concrete connecting lugs that are an integral part of the unit. The lugs have high shear strength.

• The forward face of the connecting lugs have a radius shape to make it easy to build concave and convex walls.

• The high strength connecting lugs have a built in batter or set back of 5%. Walls built with CornerStone will have a 1 to 12 set back.

• The near vertical completed wall provides for greater security from climbing when used near schools or public areas.

• CornerStone is a light weight hollow core concrete unit with high structural strength.

• The hollow core unit provides for excellent drainage.

• The hollow core unit filled with gravel creates a greater unit to unit shear strength and excellent geosynthetic pullout strength.

• The hollow core units make it easy to cut with a masonry saw.

• The hollow core unit makes it easy to build a double sided wall.

• Efflorescence does not effect the hollow core CornerStone units the way it will a solid system.

• Fencing can easily be installed into the hollow core units and then filled with concrete for stability.

• The CornerStone hollow units can be filled with concrete for use in high impact areas such as highways, parking lots or water front walls.

• A masonry steel reinforced wall can be built with the CornerStone hollow core system.

• Special lights can be installed into the hollow units with ease.

• The CornerStone hollow core units are less costly to ship per face square foot of product than the solid systems.

• The handling costs for the installer is less when using CornerStone hollow units.

• The shipping costs per square foot of product is nearly half of what it would cost to ship a solid system.

• The CornerStone unit can be used to build both straight and curved walls easily.

• The CornerStone has two different textured faces, Rock Split and Flat Split.

• One or both wings can be easily removed to create large or tight convex curves.

• The wings can be used as caring handles.

• The wings help to align the units when building a straight wall.

• CornerStone has an easy to use computer program to assist in designing a geosynthetic reinforced wall.

• Many completed CornerStone projects from very large commercial walls to smaller residential walls.

• The CornerStone connecting lugs that fit into the hollow void can shift two to three inches off of the half-bond left or right without losing the use of the lugs.