The AS 38H windrow turner is engineered to be extremely quiet running and is powered by a 450-horsepower Mercedes-Benz turbo diesel engine. The AS 38H is capable of turning windrows 10 feet high and 26 feet wide. Outside augers on the unit’s 7.2-foot diameter drum pull material in toward the centre of the drum, and cutting edges on the augers are replaceable, with a centre mixing section that lifts material up and over the drum, laying down a thoroughly-mixed and fluffed-up windrow that is up to 12 inches taller than the original.