Big Horn will not fit Big Horn 11136 Big Gulp Dust Cover . A small piece of pipe must be used when connecting. The hole for the Big Horn and the dust cap are the same size. The butt joint does not slip in the joint. It also makes it the wider of the wall seats. I might try installing my Big Gulp under the bench and cut a hole in the table. Plan to core the plastic tray in half to collect sawdust behind the saw. It seems that someone will invent a device that fits neatly on the desk?