NO ASSEMBLY REQUIRED: this 4U vertical rack arrives fully assembled with cage screws and nuts for mounting equipment. PRODUCT SIZE: 4U; W 19.29" x D 7.56" x H 3.54", compatible with Most 19" Rack Mountable Equipment VERSATILE FUNCTIONALITY: Besides vertically mounting onto wall, this bracket enables your server or networking equipment horizontally under a desk for added versatility. Including almost all screws for assembly onto wood wall, desk or concrete wall. DURABILITY: this 4U vertical rack features a solid steel design. Max Loading Weight Capacity: 35 Pounds ENVIRONMENTALLY FRIENDLY: this 4U foldable rack is at less volume, lower freight charge, smaller packaging. Easy to carry.