The blowers installed on the chassis that are functional. The blowers are listed as a bitmap. The bitmap is a string containing a list of 1's and 0's that is as long as the number of blowers supported. If a blower is installed and functional in a bay, a 1 is present in the string in the position representing the bay ID as read from left to right. For example, if a blower is installed and functional only in bay 1, and 2 blowers are supported, the string would look like '10'. NOTE: Blowers are also referred to as Chassis Cooling Devices.