SP2600 - FastFall for Disappearing Waterfall or Fountain Water Features, 26 IFastFall for Disappearing Waterfall or Fountain Water Features, 26 Inch,Black Spillway boxes diffuse incoming water flow to create the starting point of Pond free streams and falls Atlantic FastFalls are designed to make plumbing the top of the waterfall as easy as possible Innovative rear liner attachment simplifies installation and eliminates leakage due to settling Crush proof design with internal baffles stabilized by support cones carries the