Dimensions 6: 3-piece system - 3 in x 6 in x 2-3/8 in; 6 in x 6 in x 2-3/8 in; 6 in x 9 in x 2-3/8 in; Dimensions 12: 3-piece system - 6 in x 12 in x 2-3/8 in; 12 in x 12 in x 2-3/8 in; 12 in x 18 in x 2-3/8 in; Dimensions 18: 3-Piece system - 9 in x 18 in x 2-3/8 in; 18 in x 18 in x 2-3/8 in; 27 in x 18 in x 2 3/8; Dimensions Slab: 12 in x24 in x 2 3/8 in; 24 in x 24 in 2 3/8 in; 24 in x 36 in 2 3/8 in
