FerMonster 7 Gallon Plastic Carboy Kit - Includes #10 Stopper & Twin Bubble AirlockThe FerMonster 7 Gallon Kit provides a complete, high volume fermentation solution for 5 gallon batches. The 7 gallon capacity provides superior headspace to prevent blow offs, even during active fermentation. Constructed from high clarity, BPA free PET, this carboy features a wide mouth opening for effortless cleaning and addition of dry hops or fruit. This kit includes the carboy, a #10 rubber stopper, and a twin bubble airlock for a 100% airtight