CT-FAN3-QTRK-B
19 Inch rack mountable high velocity triple fan blower. Draws air in from the bottom of the chassis and out the front of the chassis. 1RU (1.75 Inch) high, front panel power selector switch, ultra quiet model.

 
CT-FANRK-B
Rack mountable triple fan blower, horizontal air flow, 3RU (5.25 inches)

 
CT-FANRK-B-PLUS
Rack mountable triple fan blower, horizontal air flow, 3RU (5.25 inches, all metal unit