Thanks Marc, You are a life saver. I could not find a pipe to fit the 18k. I found a P-Trap at the hardware store that fit. I cut the 3 slots in it and....Whala, it worked. If anyone is interested, the P-Trap is a Dux 50MM Polypropylene Trap with a 46MM ID. I used the end that fits to the Basket strainer under the sink.