Cona Drainer ( glass filter) one size fits all.

You can also use a Cona glass filter rod in the 5 and 8 cup Yama brewer. Tom and I use the 5 cup brewer with the glass drainer to brew coffee at home on the weekends and it works well.

Please note: We have heard from some folks that the glass drainer can get clogged and if the pressure is not released, it can cause the glass bowl to implode. This is less of an issue with the heavy glass on the Cona brewers than the thin glass on the Yamas.  Whenever you are brewing with the replacement glass drainer, be sure to watch the brewer, and if it stalls (i.e. the coffee does not pull down to the bowl), just wiggle the drainer to release the pressure. If it does not release - relight the flame on the bottom bowl, the increased temperature ought to equalize the pressure.

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