This large 8 pint, 1 gallon, 4.5 litre feeder is designed so that it can be filled without disturbing the hive.
385mm long, 115mm high, 140mm wide, these can be used on top of WBC bee hives, National hives and our Nucleus Boxes (N.B. they do not fit 6 Frame, 5 Frame or 3 Frame National hives)
There is no risk of leakage and associated robbing problems.
It is known as a rapid feeder, sometimes called the Miller design or an up and over feeder.