Liebherr GGU1500 Static Cooling Table-height Freezer. Liebherr's commercial freezers enable even large quantities of frozen food to be stored safely and economically: the static freezing system can be set to temperatures of between -14 °C and -28 °C.Liebherr's commercial freezers enable even large quantities of frozen food to be stored safely and economically: the static freezing system can be set to temperatures of between -14 °C and -28 °C.