Power plant 20 HP Kohler Command gasoline engine operating at 2800 RPM Vacuum pump Gardner Denver 406 tri-lobe design producing 16" Hg Solution pump CAT 3CP 1120 producing 1500 PSI and 4.3 GPM Waste tank 90 gal. (340 liter) marine grade aluminum - 75 gal. (283.1 liter) at shutoff Console dimensions (W × H × D) 16 × 34 × 40 in. | 40.5 × 86.4 × 101.6 cm Smallest cubic size in the industry: Requires 50% less cubic inches than other competitive models freeing up precious van space Thermostatic control: Allows complete temperature control up to 250 degrees Longer belt life: Unique through-frame cooling system directs air over drive belts extening belt lifespan. Intuitive control panel simplifies operation Last step chemical injection ensures peak performance from water pump system Gardner Denver 406 with tri-lobe blower design producing 16" Hg One of the most rigid frames ever built - reduces vibration and increases reliability Optional pre-filter box: Easily clean filter from the van door