Refrigerated ISO shipping containers are designed to store products that require a controlled temperature control. Also known as Reefer Containers they are capable of holding internal temperatures between +25 & -25 degrees centigrade. Internally they are lined with either stainless steel or GRP. The container floor is profiled T section to allow air flow beneath the stored product. Working reefers include the integral refrigeration equipment built in, whilst non working reefers are sold without this equipment and are sought after by furniture storage companies.