The FRI-140813 is built for outdoor applications. The insulated enclosure is made of lightweight aluminum and the front door is sealed and locked with a key. Ventilation louvers are provided on each side and are designed to prevent water or insect infiltrations. Few options are available: add the 4'' Blower option if external temperature could be higher than 80° F and add the Heater option if the temperature could go below 14° F. Three knockouts are provide for cable entry underneath the enclosure.