Clean virtually any floor surface as carpet, grouted ceramic, textured surfaces, rubberized floors and even escalators are no obstacle for the Duplex. Remarkable performance resulting from unique 800,000 bristle brushes counter-rotating at 780 rpm, actively lifting dirt, water and grime from the floor surface, replacing mops, buckets, scrubbers and wet vacuums. Solution tank capacity of 1.6 gal. and recovery capacity of 1 gal.