Concrete Block

Lightweight CMU (Concrete Masonry Units) come in a variety of sizes:
 * Concrete Brick (2 5/8X3 5/8X7 5/8)
 * 2x8x16 Solid (Patio Block)
 * 4x4x16 Hollow (Ashlar)
 * 4x4x16 Solid (Ashlar)
 * 4x8x16 Hollow
 * 4x8x16 Solid
 * 6x8x16 Hollow
 * 6x8x16 Solid
 * 8x4x16 (Ashlar)
 * 8x8x16 Bondbeam
 * 8x8x16 FHA
 * 8x8x16 Foundation
 * 8x8x8 Corner Half
 * 8x8x16 Hollow
 * 8x8x16 Solid Shoe
 * 8x8x16 Hollow Shoe
 * 8x8x16 Solid
 * 8x8x16 Splitface
 * 8x8x16 Splitface Corner