PREMIUM GRAIN JAR LIDS – These heavy duty lids are specifically designed to be functional and durable. The leak proof seal will keep contents airtight. These are not like other lids, these are built to last. I’ve had some of mine for over 15 years and that is with non stop use and the same filter.
EASY TO OPEN & SECURELY CLOSE, these grain jar lids have built in grips on the multi faceted sides to easily open or securely tighten the lid onto a jar! If your like me it’s always a struggle getting lids off and on. Say goodbye to that with these lids.
The 29 mm filter disc cover a 3/8 ” gas exchange hole that allow for gas exchange while providing 99.97% efficiency filtration down to 0.3 microns.
Spend a little extra now and save in the long run. They are 100% reusable and the best lids available for spawn production on the market!

COLORS WILL BE RANDOM: White,Blue,Green,Purple and Orange.