I searched for those as well and they seem to be gone. There was a thread about these
and I bought two of them. One for its intended purpose and one to cannibalize as an experiment for false bottom. You have to remove the handle and then cover the opening. I did so with stainless screen and some stainless wire from the hop stopper experiment which failed with too much cold break. My report is the false bottom worked very well using this method. I drilled a hole in the center for my pick up tube and was happy. I have since purchased a real false bottom to replace it but for about $25 and and hour of work you have a working FB. I don't think it is a very high quality stainless but it did do the job.