The 74-horsepower Ditch Witch FX65 vacuum excavator has airflow of 1,215 cfm and a maximum vacuum of 16 inches Hg. The new model can be fitted with 500-, 800- 0r 1,200-gallon vacuum tanks and 200-, 300- or 500-gallon water tanks. The filtration system features three stages that include a cyclonic filter tht cleans the air before reaching the filter and a 2-micron washable vacuum filter. An optional wireless boom rotates 270 degrees and extends 14 feet.