|Easily create a pondless waterfall in your garden with the Pondmaster ProLine Pump Vault. The vault houses your submersible pump, while protecting it from dirt and rocks. The horizontal slats throughout the vault allow water to enter, keeping the pump submerged, but prevent dirt and debris from clogging the pump. The vault should be placed in a hole that has been lined with pond liner and can be filled with water and gravel. The 1.5" diameter hole allows tubing to run from the pump to the top of the waterfall without altering the unit. A small notch above the tubing outlet enables you to thread the pump's cord through the vault while keeping the lid on tightly.