UNIVERSAL 19" FIT: This vented server rack mount shelf is designed to fit any 19in server rack and has a fixed surface depth of 27.56in (70cm), and an adjustable mounting depth range of 19.5-38in (50-97cm) for your data, networking or other equipment MAXIMIZE VENTILIATION: The vented shelf ensures consistent airflow to effectively dissipate heat on servers; It also works great to keep your computer and AV equipment cool HEAVY-DUTY & DURABLE DESIGN: Constructed with SPCC commercial cold-rolled steel, the sturdy IT-grade cabinet shelf ensures long term durability and supports a total weight load of 175lb (80kg) VERSATILE FUNCTIONALITY: With a surface depth of 27.56in (70cm) and adjustable mounting depth range of 19.5-38in, this shelf can work with any 19in cabinet or equipment rack. It provides additional storage space for your tools or A/V accessories. THE IT PRO'S CHOICE: Designed and built for IT Professionals, this adjustable rack shelf is backed for life, including free lifetime 24/5 multi-lingual technical assistance.