Air Hydrous is the company. The owner is Kelvin Aus. He was living in Minnesota when I got mine but I last heard he was moving to Montana. He builds these himself with equipment he has. You can try calling his Minot North Dakota number because he once told me he keeps that one active with a forwarding number - not sure if he still does now but give it a try. 701-839-5564 When you install them, what you do is set it up so the last rows of shovels do most of hte putting down anhydrous. Then work your way forward with a few shovels that will not need anhydrous put down both tubes. You don't need to put them on each shank. I was in the local Case IH dealership and saw they had some solid metal units but I think the plastic ones work better insulating the tubes from the shanks and shovels.
Edited by Duane in ND 7/27/2006 23:16
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 shovel 1.JPG (48KB - 276 downloads)
top view.JPG (88KB - 263 downloads)
front view.JPG (59KB - 257 downloads)
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