Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: Will these work in the B40/B45 Elite Keurig?
Document: Of course this company is all the richer for letting people make the mistake!UPDATE: 8-6-13Since I wrote this review I have learned a few things. These filters ARE compatible with the B40-Elite, Keurig coffee maker that I own. But first you must remove the funnel shaped piece that the K-cups fit into. The gray filter holder fits into that slot once the original piece is lifted out.
This item is billed as working on the Keurig B40, which I just received as a gift. Since I am new to the Keurig world, I took the manufacturer's recommendation that this filter would work on the B40. After I got it, it doesn't fit in the slot. Apparently the B40 'elite' version uses the 'K' series of little basket filters. It says this 'nowhere' on any of the packaging or promotional write-ups.
I love our new Keurig and while I find the prepared K-cups to be incredibly convenient, sometimes I prefer to use my own freshly roasted and ground coffee. These reusable K-cups work like a charm in our K45 Elite brewer just as long as we remember to remove the existing holder before inserting this one.
The screen tore on the one we got with the Keurig system. Now we have two full sets that work great.
I bought these to use in my new keurig. They work very well. We use them to make coffee and tea.
These work perfectly with my Keurig, now I can prepare several days worth and have the convenience of dropping in the adaptor without the cost of those cups!
If you are looking for a way to save money on the expensive Keurig pods this will work for you. It does take a few minutes longer but this way I can use my own coffee when I don't feel like buying the pods from Keurig.
These work just like the one refillable cup that came with our Keurig coffee maker. They work fine, and are dishwasher safe, if they are placed under a glass or something to keep them in place. The reusable filter packs in the stores cost much much more, this was a good bargain.
I bought a Keurig My K-Cup Reusable Coffee Filter from Wal-Mart about 8 Months ago and paid $19.99 for one. I paid a little over $3.00 for two here on amazon and when I got them they were the identical filter. I have been using them for a while now and they work perfect.
Whoever is writing the bad reviews must work for Kerurig because these work perfectly. They are probably made in the same factory.
Answer: Yes , these will fit all k-cup size brewers