These fermenters are completely air-tight and the lids sealed tight with an O-Ring. **Requires a #10 stopper or medium bung, not included** Fermonster 1 Gallon PET Carboy with Lid Features: Lid with O-Ring and Hole for use with #10 Rubber Stopper 4" inner diameter wide mouth carboy - easy to clean! Food grade PET plastic construction is nearly impermeable to oxygen penetration No hard to clean dimples or ribs Punted bottom O-Ring and Lid with one hole is included (Fits #10 Stopper) Additional O-Rings and Lids (with or without hole) available Airlock and Rubber Stopper NOT included Weight: 0.6 lbs Temperature Limit: 140° F Height: 9.45 inches Diameter: 6.7 inches Completely taste and odor free Perfect for Beer, Wine, Cider, Mead, Kombucha or any other fermented beverage!
