Spec-Block™ is available nationally in a full array of fittings and sizes.
Get predictable quality and consistency for your gray blocl requirements nationwide. Spec-Block is a gray concrete masonry unit available in standard dimensions and a variety of fittings.
The Concrete Products Group LLC (CPG) consists of regional market leaders in the concrete products industry. The CPG is organized to provide consistent, top-quality products to regional and national customers.