The Numatic CTD900-2 Carpet & Hard Floor cleaner is a larger machine with a truck like build and made with Structofoam in the construction. This is a special lightweight yet durable material which means the machine weighs less than you would think. It has both wet and dry capabilities as well as working well on both carpets and hard floors. The 2400w 2-motored Twinflo' system gives it excellent extraction strength and it incorporates a tank within a tank system that allows for a more compact design. It comes on oversized wheels and castors making it easy to move on all surfaces, even on stairs.