The FerMonster Wide-Mouth Carboy is here! Unlike other standard and wide-mouth carboys in the market, the FerMonster features smooth, ribless sides. This helps to reduce the residual yeast and sediment build-up, making cleaning simple. A 4″ wide-mouth opening reduces spillage and the need for additional equipment when filling or cleaning the FerMonster. Large enough capacity to be used as a primary or secondary fermenter. Brilliantly clear with built-in 5 and 6-gallon markings. Made with food-grade plastic and BPA-free. Lid included and is constructed as one piece, providing an airtight seal. 6 Gallon