The easy way to a spot-free boat rinse, these portable water deionizers eliminate unsightly scale and water-spotting that mineral-laden water leaves behind. Designed for use with city water at the dock, they remove all dissolved solids, resulting in mineral-free water that rinses your washed boat sparkling clean. “Dual-Bed Standardx9D model consists of two tanks plumbed in series which produce roughly 460 gallons of mineral-free water-good for about 25 rinses of a 30-foot boat. Capacity estimates are based on a water supply with a TDS (Total Dissolved Solids) content of 250ppm.Flow Rate: Under 2gal./min. (For maximum effectiveness) Tank Capacity: 1/4cu.ft. de-ionizing resin (cation, anion or mixed bed) per tank, 460 gallonsDimensions: 22"H x 6-3/4"dia. (each tank) Weight: 36lbs. Included Equipment: Tanks with deionizing resin; cap, plug, TDS meter, hose, inlet flow valve, rope handle Warranty: Five years on tank; One year on tank head