VERSATILE FUNCTIONALITY: These 1U universal rack rails let you mount non-rackmount equipment into your 19" server rack; It is also great for mounting equipment with discontinued OEM equipment MEETS INDUSTRY STANDARDS: These server mounting rails adhere to the EIA-310 standard for 19" rackmount equipment; The depth of the rack mount rails is also adjustable STURDY CONSTRUCTION: To ensure your equipment is secure, this network equipment mounting rails feature cold-rolled steel construction; The durable design can support a weight load of up to 55lb (25kg) THE IT PRO'S CHOICE: Designed and built for IT Professionals, these server-rack rails are backed for life, including free lifetime 24/5 multi-lingual technical assistance