Image Item No. Description  bhol03  Brick 2 x 3 without Bottom Tubes Catalog: Parts: Brick  bhol04  Brick 2 x 4 without Bottom Tubes Catalog: Parts: Brick  crssprt03  Brick 2 x 8 without Bottom Tubes, with Cross Supports Catalog: Parts: Brick  700eX  Brick 10 x 20 without Bottom Tubes, with '+' Cross Support (early Baseplate) Catalog: Parts: Brick