Our Insulated Water Troughs are designed with a thick layer of high density polyurethane insulation foam positioned between 2 polyethylene walls that maintain water at an optimum temperature in extreme climatic conditions. This ensures that water will remain available for animals in sub-zero temperatures and will continue to work in conditions as low as -30 Degrees without the need of electricity. Animals access the water by pushing down on the white float and the secure chamber can be easily accessed for servicing.