TETN1555 Features: * Steel blank filler panels with vents * Comes with 1, 2, 3 and 4 RMU * Offers cooling efficiency * Rack Units: 4U Includes: * Includes vents Dimensions: * Overall dimensions: 1" H x 8" W x 20" D, 2.8 lbs Warranty: * Manufacturer provides lifetime warranty on cables and 2 years on all racks, cabinets and non-cable products