Image | Item No. | Description | By |
| bslot02b | Brick 2 x 2 without Bottom Tubes, Slotted (with 2 slots, corner) Catalog: Parts: Classic | 1 |
| bslot03bL | Brick 2 x 3 without Bottom Tubes, Slotted (with 2 slots, corner left) Catalog: Parts: Classic | 3 |
| bslot03bR | Brick 2 x 3 without Bottom Tubes, Slotted (with 2 slots, corner right) Catalog: Parts: Classic | 3 |
| bslot04cL | Brick 2 x 4 without Bottom Tubes, Slotted (with 2 slots, near corner left) Catalog: Parts: Classic | 6 |
| bslot04cR | Brick 2 x 4 without Bottom Tubes, Slotted (with 2 slots, near corner right) Catalog: Parts: Classic | 5 |
| bslot04bL | Brick 2 x 4 without Bottom Tubes, Slotted (with 2 slots, opposite corner left) Catalog: Parts: Classic | 9 |
| bslot04bR | Brick 2 x 4 without Bottom Tubes, Slotted (with 2 slots, opposite corner right) Catalog: Parts: Classic | 8 |
| bslot17 | Brick 4 x 4 Corner without Bottom Tubes, Slotted (with 2 slots) Catalog: Parts: Classic | 4 |