At Lowe's, this cored concrete block costs 30 cents less per block than Home Depot's near-identical one. Blocks sold as 8" x 8" x 16" measure 7-5/8" x 7-5/8" x 15-5/8" in real life, which leaves room for a 3/8" mortar joint. A finished wall takes about 1.125 blocks per square foot of wall face. Opt for store pickup to avoid the delivery fee. Buy Now at Lowe's
Features Nominal size of 8" wide x 8" high x 16" long Hollow cored design Meets ASTM C90 specification for masonry blocks Made for above-grade masonry walls and general construction Uniform color and texture with no large chips or breaks Some units include a molded vertical groove that works as an expansion joint