I have a YF 115C filter, Collins Mfgr. I bought it at dayton on the chance that it woudl fit in my 857, and it does not. Anybody have a need for a YF 115C?? Contact me off list; I made a deal on it and would pass thru for what I have in it plus shipping, subject to your test. Ralph Matheny K8RYU 207 Gibbons Place Marietta Ohio 45750 mathenyr at marietta.edu