Image Item No. Description By  6061  Brick, Modified 2 x 4 x 2 with Holes on Sides Catalog: Parts: Brick, Modified 1  2464  Brick, Modified Facet 3 x 3 x 2 Bottom Catalog: Parts: Brick, Modified 1  2463  Brick, Modified Facet 3 x 3 x 2 Top Catalog: Parts: Brick, Modified 2