The Berkey Sight Glass makes it so you don't have to open the Berkey by lifting the heavy top section off to gage how much water is left inside. An absolute essential piece of equipment, especially if you use the Big Berkey everyday in your home for tasks like filling your Coffee Maker! It is even more handy if you have elderly parents living in your home who can't lift to top of the Berkey.....Worth the investment!

This product makes a world of difference. You don't have to pick up the top unit to look inside. Wonderful! Only "Semi" complaint is that the spigot handle is plastic. I hope it lasts.

The glass spigots are a must have. It just makes it easier to know the water level at a glance.

If you have or are getting a Berkey, get one of these. Eliminates the need to open the bottom container and you'll never overflow. A solid purchase.

If you have committed to a Berkey, you can go the extra 2 feet for this.
Helps you to not overfill and always know where you stand if you have plans to use extra water.
You never want to access the bottom part of your Berkey unless you absolutely must (avoid contamination).