They do not fit our Roomba i4+ 4552 as advertised. The opening in the bag doesn't seem big enough and the lid doesn't close/close either. I saw another reviewer reporting the same thing. So if you have an i4+ I would skip this one. Now Roomba can't be used for a few days while waiting to get really good bags. As always, we had a first class return experience with Revain.
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