The PBF 4.0 blast chiller/shock freezer is the first and only eco-friendly R290 blast chiller in the United States. R290 is a non-toxic, refrigerant-grade propane with a low environmental impact and virtually no global warming potential (GWP). This means it possesses no qualities that can destroy the ozone layer. It fits perfectly into a kitchen workflow with a convenient 4 or 5 pan under-counter design. This compact unit still has an output chilling capacity of 40 lbs within 90 minutes from +160 degrees F to +38 degrees F, and a freezing output of 20 lbs within 240 minutes from +160 degrees to 0 degrees F, making it the most efficient blast chiller with the largest capacity of chill/freeze within its footprint.