I have 6 of these, I use them all the time. They work great as I just use a tall racking cane. I did build a stopper with a hole to add an air lock. I have 3 fermenters in long term storage, they don't seem to add a lot of oxygen to the long term beers, probably because of the wall thickness and the gadget in the openings. They also Stack quite nicely, if you can lift them. All in all they work great for what I need.
PS: I bought them at a local packaging company, the only problem with dealing with them is they have a 100.00 min order. So, my order of 6 brought me over the 100.00 level so it was about $18.00 each.




