Carboy Cap

[dpolug]

I plan to use an empty 5 gallon glass Distillata carboy as a secondary.

Does anyone know off hand what size carboy cap fits on this thing?

 

[BigKahuna]

The regular carboy cap.

there are only 2 sizes one for the 6 1/2 gallon...and the orange one.

 

[McKBrew]

I have a glass carboy with a much narrower neck than average. If you can't find the right cap, you might need a stopper instead.