Active thermal control makes use of electrical heaters and certain actuators such as louvers to control temperature ranges of equipments within specific ranges. Source: Internet
It can be via operable windows, louvers, or trickle vents when spaces are small and the architecture permits. Source: Internet
Temperature control was achieved through the use of adjustable louvers mounted on six of the electronics assemblies, plus multilayer insulating blankets, polished aluminum shields, and surface treatments. Source: Internet
The heat range was maintained within the operating limits of the equipment by means of louvers located below the mounting platform. Source: Internet
Thermal control was achieved through the use of adjustable louvers on the sides of the main compartment. Source: Internet
The explosion only shattered some louvers on the ground floor. Source: Internet