Lid Option -3
Screw type lids, also known as gamma lids, are popular for bulk food storage applications and are an excellent choice for our automatic poultry waterer. They are well made and best suited for the frequent opening and closing of our reservoir for cleaning. If you decide to use this type of lid, consider drilling the vent hole on the raised part of the lid, as the lower parts will catch and hold rain water and other debris. If you don't mind spending the extra five bucks, I would go with this one.