Protect your expensive equipment with a Pyle Pro cooling system. A small investment now can save thousands in costly repairs due to thermal damage. Pyle rack mount cooling fans look cool - and keep your equipment cool. DETAILSFour Cooler Master 80mm Ball Bearing Case Fans Digital LCD Temperature Display Equipped with Temperature Sensors To Check Any Part Temperature Display Screen Shows Inner Temperature For Cabinet Or Other Multimedia Centers Durable Metal Construction Mounting Holes (Inner Width): 17 1/2" Wide (From Hole to Hole) Mounting Holes (Outer Width): 18 5/8" Wide (From Hole to Hole) Mounting Holes (Inner Height): 2 11/16" High (From Hole to Hole) Mounting Holes (Outer Height): 3 3/16" High (From Hole to Hole) Installation Hardware Screws Included Power 110V - 60HZ Dimensions: 19" X 4.3" Weight: 3.5 LBSSpecification MANUALS & DOWNLOADS