http://www.jmac-farm.com - J-MAC, LLC provides the highest quality Grain Bin Level Indicators that consists of a white nylon box that’s open to the grain bin on the inside and sealed on the outside with a clear, unbreakable polycarbonate window. Located at 13821 156th Ave NE, Deering, ND, 58731, you can call (701) 340-3146 to place your order or visit http://www.jmac-farm.com/ for further information.