Durable: This 12U server cabinet is made of premium cold rolled steel, and it can holds up to 132lb (60kg); Electrostatic powder coat preventing rust and corrosion User-friendly Design: There are built-in handles on both sides for easy transportation; Roller design moves anywhere and anytime, is convenient, and is more energy-saving Dust prevention and ventilation: Open frame rack with nylon brushd can protection from dust and dirt accumulation,increase heat dissipation and protect equipments Widely Application: This server rack is versatile for 19" standard equipment and devices,including your networking, AV, and rack mount components Universal: EIA/ECA-310-E compliant; Equipped with installation M6 cage nuts and screws; Available in 9U, 12U, 15U This Data Rack Cabinet takes into account from the customer's perspective,The main features are lightweight and movable,heat dissipation,suitable for people who need to use it in different places and have a very high frequency of use. We have various specifications and configurations,the Network Rack with Caster specifications include Height of 9U,12U,15U.