Cutthroat Flumes are designed to easily retrofit into flat-bottomed channel applications.  

Here a fiberglass Cutthroat Flume has been modified to fit into an existing irrigation channel.  The end flanges that normally extend below the floor of the flume have been removed.  

To secure the flume in place, the customer will use anchors at the inlet / outlet of the flume to help secure the flume in the channel.