GFL Chart Recorder: The chart recorder ensures continuous recording of the inside cabinet temperature on pressure sensitive paper without the use of expensive ribbons or ink. Designed for continuous operation and equipped with 3 paper feed options. A roll of paper for the recorder will last from 15 to 368 days. The recorder can be installed in Chest Freezers with a storage volume of 70 and 100 l and upright freezers with a storage volume as of 300 l. It can also be mounted in a separate housing when used in combinations with the other freezers. - Type 6951: for installation in a separate housing.