Concrete masonry is one of the most versatile building products available because of the wide variety of appearances that can be achieved using concrete masonry units. Concrete masonry units are manufactured in different sizes and shapes to achieve a number of functions. In addition, because of its modular nature, different concrete masonry units can be combined within the same wall to achieve variations in texture, pattern, and color.

Certain concrete masonry sizes and shapes are considered standard, while others are popular only in certain regions. Anchor can provide detailed information on specific products, or the feasibility of producing custom units. A more complete guide to concrete masonry units is the Shapes and Sizes Directory. Typically, concrete masonry units have nominal face dimensions of 8 in. (203 mm) by 16 in. (406 mm), available in nominal thickness of 4 , 6, 8, 10, and 12 in. Nominal dimensions refer to the module size for planning bond patterns and modular layout with respect to door and window openings. Actual dimensions of concrete masonry units are shown below.