This 1u rack shelf lets you add 10 in of flat storage space to any eia 310 compliant server rack or cabinet the shelf is vented to improve air flow and help lower temperatures in your rack the durable fixed rack shelf can hold up to 20 kg 44 lbs of equipment and is constructed using spcc commercial grade cold rolled steel the 1u cantilever shelf lets you optimize your working space by giving you the ability to mount equipment to your rack instead of taking up desk or floor space it