Through more than 30 years, Keystone and its network of producers among them, Carmelo, have become the world’s leading source of segmental retaining wall and landscape systems.

Structural retaining walls continue to be trusted by engineers, architects and contractors worldwide to provide the best site solutions for commercial, municipal, industrial, transportation/DOT and residential applications.

Keystone Compac®

Featuring unrivaled aesthetic options, cost saving versatility and proven wall performance, the Keystone Compac is favored by architects, engineers and contractors worldwide. Using the proven Keystone pin connection system, Keystone Compac is the perfect solution for gravity walls up 4- feet (1.2m) in height and large-scale projects in excess of 60′(18.2m)h*.  Compac Units are manufactured by CARMELO in a variety of color tones. 

*With the use of geosynthetic reinforcement and proper engineering.

Keystone Standard®

The product that started the retaining wall industry is still the industry leader for tall walls and critical structures. The Keystone Standard unit’s depth provides unrivaled structural stability. From backyard landscaping to large, load-bearing reinforced structures, the Keystone Standard unit’s  face styles, colors and design possibilities make it a favorite of architects and engineers worldwide. Standard units are manufactured by CARMELO in a variety of color tones.

Keystone Garden Wall®

A do-it-yourself retaining wall tradition, Keystone Garden Wall is perfect for landscape walls up to 2-feet (60cm) in height;  as tree rings, edging, raised gardens and borders. Utilizing the rear-lip alignment method, Garden Wall easily builds straight, curved or terraced walls to fit the contours of your yard. Keystone Garden Wall by CARMELO is manufactured  in a variety of color tones.