New window turner good for smaller sites. Built in 2017. We used a 50hp tractor to pull did ok but probably could use a bigger tractor. Our rows were 4ft x 8ft x 250ft. I was experimenting with some ideas for my poultry manure but the cost of it all just was more than I was willing to risk. I also have a 1996 Royer Trommel Screener and everything works as it should it's a really good machine.