Use in conjunction our Dual-Stage Temp Controller andFermotempElectric Fermentation Heaterfor complete control over fermenting temperatures in cool environments. Fits 3, 5, 6, or 6.5-gallon glass carboys. Not compatible with Better Bottles.

Also compatible with the Dual-Stage Temp Controller, Inkbird Temp Controller, Thermostar, and Johnson Digital temperature controllers.

*Big mouth bubbler and lid not included.

California Proposition 65

Proposition 65 Warning: This product contains chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm.