6x8x18 Block

6″x8″x18″ hollow concrete masonry units (often called cinder block) meeting ASTM C-90, C-129, C-140, and C-55 (if applicable) specifications.

They provide excellent structural strength and are commonly used in a wide range of building applications, including load-bearing walls and foundations.

Uses: Masonry walls, retaining walls, buildings, bedding

How much block do you need? Block Calculator

Nominal dimensions

• 6" deep


• 8″ high


• 18″ wide

Actual dimensions (height and width) are minus 3/8″ less to allow for mortar.

Proudly made in the USA in Bladensburg, MD and Millsboro, DE. Material certifications.

XX blocks in a cube (pallet)