Lightweight, point-of-use ZH and ZU series vacuum generators combine design simplicity with high performance. Simply plug an air supply tube in one end, and vacuum is ready at the other end. The slim ZU generators are extra compact. The ZH and ZU immediate response may be quicker than central vacuum systems. Also, these generators are often smaller and lighter than the bulky vacuum lines used in central vacuum systems. A built-in exhaust silencer keeps generator noise to a minimum. Available in four nozzle diameters and a number of Port Sizes.