WFB - WFB Water Fill BoxEasyPro Water Fill Box is the perfect way to mount a water fill valve in a pond without a skimmer or a Just A Falls (pond less) water feature in the reservoir! Ideal for auto fills inside ponds, Just A Falls systems or formal pools A good way to mount a water fill valve in a pond without a skimmer Provides an ideal housing in which to install an auto fill Designed to house WFS37 and WFS59 fill valves Sits inside the liner and holds fill valves up