The Grand Ledge Wall system is comprised of block units that are the following Size = Unit 1 (36 x 12 x 23 in), Unit 2 (48 x 12 x 23 in), Unit 3(60 x 12 x 23 in), Unit 4 (72 x 12 x 23 in). The Grand Ledge Wall system is also comprised of corner units that are the following Size = Corner 1(35.25 x 12 x 23 in), Corner 2 (42.75 x 12 x 23 in), Corner 3 (46 x 12 x 23 in), Corner 4 (50.5 x 12 x 23 in). The Grand Ledge is an engineered wall system. It is made strong with the finest granite aggregate and 24 unique wall textures. This product is sold in full bundles only. Block and corner units are bundles seperatly.