IROCK TS-522 heavy-duty screener is powered by a 129-horsepower Caterpillar C4.4 engine and can process materials at a rate of up to 670 tons per hour. Standard hopper feeder is 14 feet wide and is rated to 12 cubic yards. The 22x5-foot top deck and 20x5-foot bottom deck provides a total screening area of 210 square feet. This two-deck design enables users to produce and sort up to three different size products, the company says.