This is the ideal cooler door for energy conscious, 24/7/365 applications in agricultural, medical, and distribution facilities. Fast operating speeds allow for a constant flow of traffic without compromising energy control and efficiency. An advanced 3 mm thick gray foam panel material maintains flexibility to 33 degrees F and helps to keep condensation to a minimum in cooler to ambient areas. For added efficiency, an optional unheated air curtain is available. When the door is activated, the blower turns on and deactivates minutes after the door is closed.