According to one aspect, an apparatus includes a first component, a plurality of line card slots, a fan array, and a sensor arrangement. The first component has a first opening defined therein and a second opening defined therein. The first component includes a first configurable line card flapper is arranged to at least partially cover the first opening and a second configurable line card flapper is arranged to at least partially cover the second opening. The plurality of line card slots includes a first line card slot associated with the first opening and a second line card slot associated with the second opening. The fan array includes a plurality of fans. The sensor arrangement includes at least one sensor arranged to monitor at least one condition. The first and second configurable line card flappers are arranged to be configured using information obtained from the sensor arrangement.