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Masonry Blocks - Dimensions

Concrete Masonry Unit Blocks (CMU) - dimensions.

 

concrete masonry block

Typical Concrete Masonry Units - CMU - dimensions

Standard Blocks

Masonry Standard Block Dimensions
Nominal Size
(in)
Actual Size
(in)
4 x 8 x 16 3-5/8 x 7-5/8 x 15-5/8
6 x 8 x 16 5-5/8 x 7-5/8 x 15-5/8
8 x 8 x 16 7-5/8 x 7-5/8 x 15-5/8
10 x 8 x 16 9-5/8 x 7-5/8 x 15-5/8
12 x 8 x 16 11-5/8 x 7-5/8 x 15-5/8

Half Blocks

Masonry Half Block Dimensions
Nominal Size
(in)
Actual Size
(in)
4 x 8 x 8 3-5/8 x 7-5/8 x 7-5/8
6 x 8 x 8 5-5/8 x 7-5/8 x 7-5/8
8 x 8 x 8 7-5/8 x 7-5/8 x 7-5/8
12 x 8 x 8 11-5/8 x 7-5/8 x 7-5/8
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