The CTFAN3QTRKB is a rack mountable ventilation system that incorporates 3 individual fans in a single rack space 175 Housing A single power output is attached to all three fans to minimize the number of outlets needed The fans draw air in from the bottom of the chassis and out through the front of the chassis The CTFAN3QTRKB operates with a very low amount of noise while maintaining a high volume of air movement Each individual fan rotates at 2300 revolutions per minute 10 Percent for a combined 6900 RPM of air flow The CTFAN3QTRKB is highly recommended above any chassis mounted modulator set One CTFAN3QTRKB should be used Features. Three individual ultra quiet fans in 525 of rack space 3 rack spaces. Reversible fans for air intake or exhaust. Low noise high volume. Black powder coat finish. All three fans are tied into 1 ac plugSpecifications. Size 19