I originally purchased the air gap to replace on old almond-colored cover. Because it didn't fit quite right on the old air gap, I decided to replace the entire air gap, which is connected to the garbage disposal and dishwasher. The included foam washers/gaskets that go on top and below the sink were a little too small, but I found some larger ones at a local hardware store. It would have been nice if the washers were made of a stronger material. The installation was a bit difficult for me, but everything seems to be working fine.