Standard Concrete Cinder Block - Durable Construction Material #1663243 (License: Personal Use)

This is a standard 8-inch × 8-inch × 16-inch concrete masonry unit (CMU), commonly called a cinder block, featuring two rectangular voids to reduce weight while maintaining structural integrity. Its coarse aggregate surface enhances bonding with mortar, and the split ends allow for interlocking during wall assembly. Manufactured using Portland cement, sand, and fine aggregates, it meets ASTM C90 specifications for load-bearing applications.

Used in residential and commercial construction for load-bearing walls, foundations, and partitions; often featured on building supply websites, contractor resource pages, and DIY project guides where users seek product specs, installation tips, or material comparisons.