Specifications:GLOBALRACK 4-post open frame server rack ,Network rack that complies with all 19-inch standard equipment.Installation depth 15.75-13.75in,Equipped with brake wheels，Compatible with various servers, switches, data, AV, other IT equipment. COLD ROLLED STEEL RACK:Free Standing Rack, Very stable,Each server rack is equipped with 3 pairs of L-shaped mounting brackets(Support track) to secure your equipment,The bottom wheel extends outward to protect against tipping of the frame caused by uneven equipment weight, Ensuring your equipment is 100% safe. Premium quality craftsmanship, With supporting heave duty over 1800LBS Capacity, The thickness of the column steel plate reaches 2MM (0.08 inch).The battery module can be fully supported. EASY ASSEMBLY:Network rack with easy-to-follow assembly instructions and online video; Compact flat-pack shipping to avoid damage and facilitate installation. ASSEMBLED SIZE: 42U server rack/Date rack 82"H x 21.75"W + Bottom wheel length 23.6".Provides a variety of size options 15U server rack 20U server rack 27U server rack 42U srever rack. WARRANTY AND HARDWARE:This 42U data rack, 4 post network rack is backed for 3-years， Global Rack are built to industry high standards.Serve with square screw holes, Also M6 screws and cage nuts are included and required assembly tools. GLOBALRACK 42U Open Frame Server Rack, Solid, Versatile, and Premium Quality Made; Each server rack is equipped with 3 pairs of L-shaped mounting brackets(Support track) to secure your equipment,The bottom wheel extends outward to protect against tipping of the frame caused by uneven equipment weight, Ensuring your equipment is 100% safe. This high-quality four-post server rack is suitable for all standard 19-inch equipment. 42U server rack 82"H x 21.75"W Installation depth 15.75-13.75in,a great feature that will fit most of the server installation on the market. This date rack is made of Cold Rolled Steel to provide you with a maximum load of 1800LB, The thickness of the column steel plate reaches 2MM (0.08 inch). Available in variety heights and depth, Screws and cage nuts are included,Includes the necessary assembly tools.