There are three different classes an enclosure can be placed in, depending upon the amount of protection it provides. If the enclosure is in a climate where winters are long and temperatures are cold, the ASSE 1060 Class 1 will provide the freeze protection needed.
- Class 1 is the hardest to achieve, but backflow enclosures in this class offer maximum freeze protection. The 1060 standard freeze protection means the heated enclosure will maintain 40 degrees Fahrenheit in as low as -30 degree weather. If you live in an area with freezing temperatures, no matter how long the freeze lasts, you should require Class 1 enclosure.
- Class 2 only includes covers that have frost protection. This means the industrial enclosure is insulated but does not meet the same temperature requirements as Class 1. These should only be used in areas where temperatures never fall below 33 degrees Fahrenheit.
- Class 3 boxes do not provide freeze or frost protection. These are only useful for aesthetics as well as theft, vandal and accident protection.