We have one on one of our 800 Series 30 foot heads. It cost us 950.00. I am not that impressed with it, when comparing it to the Johnson bar. We have a 800 30 foot head with the Johnson Bar on it and the header losses are a lot less with this setup than the raised feather sheets that are on the other header. The raised feather sheets do help for feeding but the Johnson bar feeds good to. So both heads feed the same. But the header loss with the raised feather sheets make this setup not as good a deal. Plus the cost is higher for the feather sheets than the Johnson bar.