Wet Spot Softwater Washdown Systems Uses proven technology common in residential and commercial water softeners, in a portable, manually operated tank, that travels anywhere. 12 year warranty. Wet Spot Plus Model (#WS2500C) - Suitable for boats up to 80' and comes with wheels and a carrying handle underneath. 33" x 10" x 9". Weight: 35 lbs. dry. Wet Spot Heavy Duty (4000)- Large enough for large yachts and big sportfishing boats, and boats that travel to areas like Mexico or the Med, where water is extremely hard, requiring the extra punch. Extra strong with doubled bases and no wheels. 38" x 10" x 9". Weight: 42 lbs. Wet Spot Super Model - For any size yacht in any water system, anywhere. Comes with wheels and handle, and doubled bases for extra strength. 45" x 10" x 9". Weight: 50 lbs. *All units come with all necessary equipment to operate - A recharger, 30" service hose, 10" recharge hose, and a softness test kit. Salt is purchased separately, as needed. The average 60 ft. boat will use only about 10 lbs. of salt per month.