Image Item No. Description By  4202  Brick 4 x 12 Catalog: Parts: Brick 3  4201  Brick 8 x 8 Catalog: Parts: Brick 5  4204  Brick 8 x 16 Catalog: Parts: Brick 9  733  Brick 10 x 10 without Bottom Tubes, without Cross Supports Catalog: Parts: Brick 1  30072  Brick 12 x 24 Catalog: Parts: Brick 1