Bracket to install the automatic pond filler which is a durable little device mounts in the pond and is fed by a ONE INCH line. Most units are fed by the average icemaker line and honestly couldn't top off a summertime pond if it had all day. This unit comes on when the water level drops below the set point and shuts off as soon as it senses "full" Reliable and useful! Care should be taken in winter as the line could freeze, preventing the unit from being able to fill the pond. Makes For an Easy Installation. Essential for the busy and traveling Koi keeper.