It does not work for 28223 model...
343996
so it was left in the box as it was more pricey my time and the return than the product itself, really don't know why is so hard for a huge company like GE to validate products work as they say... AND STILL IT STATES THAT WORKS WITH THE 28223...
4326244
Did not fit the 4320 model. Sent back last week , paid shipping myself, no money returned yet
4043687
Did not work, possibly because it is not the correct adapter, however it appears it Should be the right one.
4125665
When I finally got around to replacing the filter, long after the return window closed, I discovered that I had ordered the wrong filter. It turns out that there is a 211+, not a 211, that takes a different filter than the 211, my version. This is an expensive mistake as the 211 is a product that works. Why in the hell the company doesn't label a different product differently in number is beyond my pay grade.
834522
I had to send it back. I do not think it was compatible. I ordered some from another source and it worked fine.
535466
Bought this for my KP2671xBU model which is listed in the model #'s that it fits and it's the wrong one.  Disappointed that I have to pay $5 to return it.
4026786
doesn't work with my OKI MB451 - error 231:01, my previous toner works just fine so there's no problem with the printer.
1794802
It didn't work it will not fit the model I ordered it for and it did not specify that in the ad or else I wouldn't have ordered it in the first place
3119755
I give it 1 star, not because I hate it---Read on.  Unfortunately the advertising that this remote works with most model garage door openers after 1993 (or '93) with sensors, is not accurate.  I wish they had published the information I found after purchasing this.  I am sending it back of course but I found an incompatibility list from Chamberlain's own website.  My garage door opener is a Wayne Dalton 3212 with the door sensors and was installed in 2003.
Anyway, for those who would like the list, here is the link below.  Check it out before you buy---and to the sellers of this remote, please reference or post the matrix yourself so your customers don't have to go through the hassle of trying to get it to work then having to send it back.

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3976590
This spool does not fit properly or work with the 21212 model. I double checked before buying and was told it will work - well it does not and has damaged my trimmer as well.  Cord wrapped around the shaft and I can not get it off.  21212 uses a double line spool, this is a single, the cartridge is smaller than the one that came with the trimmer.  It appears the original string cartridge replacement is no longer avialble.  So now what do I do with this trimmer?  Request a refund for it too I suppose?
1042687
This product is not compatible with the models it says it is. I have wasted money and time trying to get a refund.
1096187
No. This is not 3428 model. Make sure you get the right model.
4459865
Does not fit my model-said it would..would not recommend
1267831
Was probably made for a different model than my older unit, didn't fit
4119281
I purchased this item and found that it would not work with either of my Vivitar 283 units, even with a flash unit pointed directly at the slave. Both of my 283s will fire from the sync cord. I'm not sure if the slave was bad or the 283s too old.
I have used Wein slaves in the past with out any issues, but not with these Vivitar 283s, so this reviewer has no conclusion
3560089
This is not 3M2135. It is 3M2136 which is a direct replacement. See link below for product description.
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828365
The item listing says this works for A1286 Macbook Pros but that is incorrect. I have a 15" Macbook Pro (Early 2011), model A1286. This is the wrong part to buy