ADJUSTABLE DEPTH: 2-Post 4U wall-mount server rack features an adjustable depth of 12" to 18" (30,0cm to 45,7cm) as well as a dual-position 12" shelf that can be installed at the top or the bottom of the rack HASSLE-FREE INSTALLATION: the wall mount network rack features 10-32 tapped rails for hassle-free IT equipment installation; Directly mount your equipment to the rail without using any cage nuts STURDY AND SAFE: the open post wall rack is constructed of solid steel to ensure a sturdy and safe mounting solution for your equipment; Wall mounting holes positioned 16" (40cm) apart to match standard NA drywall framework; EIA/ECA-310-E Compliant PERFECT FOR SMALL SPACES: The wall mounting feature allows you to free up desk or floor space, making the data rack ideal for your small home / office (SoHo) environment, or any other location with limited space available THE IT PRO'S CHOICE: Designed and built for IT Professionals, this TAA compliant wall mount bracket is backed for life, including free lifetime 24/5 multi-lingual technical assistance