Product review (2 stars): Not airtight
Maybe it is just me, but this has small leaks to the outside all over it (especially at joints) and didn't ship with instructions (But box reads that it should).  For this price, should be airtight!  You could spend extra money on some special tape to seal it up, but by then you may as well pick up the equivalent at the hardware store since the price of this plus tape will cost more than what the store has to offer.