Warehouse I is the 83rd level in Chip's Challenge Level Pack 2. This level is the second of the 100% Sokoban levels; Traps II was the first, and the mind-squashing sequel, Warehouse II, is one of the others. Interestingly, however, the two Warehouses were not made by the same person; Tyrethali Ansrath made this one, while Eric Schmidt's sequel requires his usual highly technical precision.
As a Tyrethali composition, Warehouse I is easy as far as these levels go. Only 18 blocks are required, and once the beginning section is cleared out, near the teleports, the rest of the level should not be difficult.