Replacement lid for wide mouth glass carboys. Features a built-in airlock. Screw cap covers a 1" hole which will accept a #5 stopper if a traditional stopper and airlock is preferred. Made from polypropylene.

Airlock Lid Setup:

• Twist off the small red cap
• Twist on the small white cap
• Pour water or sanitzer around the small white cap until it covers the blow-off vents