Montana Fiberglass Inc. specializes in manufacturing fiberglass stock tanks, including round, oblong, and insulated tanks for livestock watering systems. The company, based in Lewistown, MT, serves Montana and neighboring states like North Dakota, South Dakota, Wyoming, and Nebraska. Montana Fiberglass prides itself on the durability of its tanks, constructed with a bi-directional woven mat for puncture and tear resistance. In addition to stock tanks, the company offers buried or above-ground storage tanks for potable, non-potable, and oilfield use, all built to ANSI standards and backed by a two-year warranty on workmanship and materials.