Image Item No. Description  bslot03bR  Brick 2 x 3 without Bottom Tubes, Slotted (with 2 slots, corner right) Catalog: Parts: Classic  bslot04bR  Brick 2 x 4 without Bottom Tubes, Slotted (with 2 slots, opposite corner right) Catalog: Parts: Classic  bslot10  Brick 2 x 10 without Bottom Tubes, Slotted (with 1 slot) Catalog: Parts: Classic  bslot14  Brick 2 x 14 without Bottom Tubes, Slotted (with 1 slot) Catalog: Parts: Classic  bwindow01  Window 4 Pane for Slotted Bricks Catalog: Parts: Classic