Dimensions: 8″x12″x14″ 24 Square Feet per Cube Open Core Design
Available Thickness
Blocks: 8″H x 12″D x 18″W (24 Units per Cube)
Abraded Caps: 3″H x 14″D x 12″W (72 Units per Cube)

Featuring an open core design and the pin connection system that is trusted by engineers and contractors around the world

the Keystone Compac is lighter weight than other structural blocks and has a shortened tail design that makes it easier to handle and perfect for projects that do not require the embedment length of the Keystone Standard unit.

The Pisa2 is a solid, modular concrete retaining wall system offering superior design flexibility, a desirable quarried stone appearance and one of the highest weight-per-square-foot strengths in the industry. Easy to install and low maintenance, Pisa2 units are manufactured in pairs, face-to-face, and the surface is achieved by factory splitting to provide the rough finish.

The system requires no mortar or mechanical fasteners; it uses a patented shear connection that makes the units self-aligning and self-battering.

Wedge Block:
6″H x 12″D x 8″W (60 Units per Cube)
Jumper Block:
6″H x 12″D x 12″W (48 Units per Cube)
Corner Block:
6″H x 8″D x 20″W (24 Units per Cube)
Pisa2 Cap:
3″H x 12″D x 8″W (128 Units per Cube)