PolyStar+ Enclosures are intended to be utilized for outdoor and indoor applications, manufactured with polycarbonate designed to perform in cold weather applications. In general, the product performance will not be adversely affected until temperatures below -40ªF are realized. In our literature, we document a normal operating temperature of -20ªF to +240ªF (-20ªC to +115ªC). We do this to provide a safe operating range, as product application and enclosure placement are not always exactly known.