: It is just running the dishwasher drain hose up to the bottom of the countertop, or sink, before dropping back down to connect it to the disposer or sink drain.

: : This is pretty much my question. What is a "high loop"? I ask because I do not have enough holes in the sink to accomodate an air gap and my dishwasher installation guide refers to an alternative of using a high loop but doesn't say what that is. Any help would be great!