This is a replacement lid for both the 6 and 7 gallon Fermonster Pet Carboy. The huge 4" opening reduces spillage and the need for additional equipment when filling or cleaning the Fermonster. The large lid allows for easy filling and makes hop additions as easy as ever. Lid is constructed of heavy PET plastic.
Disclaimer - These carboys are made of glass and should be handled with extreme care. We have been able to use both hot and cold liquids in them, but they are not impervious to thermal shock and can shatter when exposed to large, sudden changes in temperature. Use caution.
Note - The breather cap is now clear plastic, not black plastic