Standard Concrete Cinder Block - Durable Construction Material #1663246 (License: Personal Use)

This gray concrete cinder block is made from a mix of Portland cement, aggregate, and water, cured to achieve high compressive strength. Its two rectangular hollow cores reduce material usage while maintaining structural integrity and allowing for rebar reinforcement or utility routing. The rough-textured surface enhances mortar adhesion during masonry work.

Used in residential and commercial construction for load-bearing walls, foundation piers, and soundproofing partitions; commonly featured on building supply sites, contractor guides, and DIY project pages where users seek product specs or installation tips.