The F Series also features an overhang cover style and adds back panel mounting capabilities. Both of these streamlined series feature unobstructed sidewalls, captive stainless steel cover screws and a full range of sizes. Both are designed with patented fiberglass reinforced polyester and feature a continuous polyurethane gasket that provides a complete environmental seal.
Both of the CF and F Series have been tested to meet the International Electrotechnical Commission (IEC) IP ratings. The new ratings are based on a proven ability to withstand intrusion by something as small and gentle as a particle of dust and as large and strong as water "projected in powerful jets."