Image Item No. Description  4000  Ladder 16 x 4 with Semi-Circular Pivot Catalog: Parts: Ladder  4000c01 (Inv)  Ladder 16 x 4 with Semi-Circular Pivot with Red Ladder Holder (4000 / 5) Catalog: Parts: Ladder  5  Ladder Holder for Ladder 16 x 4 with Semi-Circular Pivot Catalog: Parts: Ladder