KNRI series climatic post-maturing systems are designed for the post-maturing, drying and storage of pet food and pet food products. The standard range for temperature and moisture are between +10 °C to +18 °C and 65 % to 90 % relative humidity. The air flows over the products from the top to the bottom. The combination with the opposite direction of airflow over the productsin the pre-maturing system (KKRI or KRAI) creates a perfectly uniform final product.