1. Frame is done with welded process 2. Front door is made with tempered glass of 5mm thickness. Side panels are unable to remove which has vents on them. 3. Quality SPCC cold rolled steel sheet of 1.0 1.5mm. 4. Mounting holes at the back are matched with M8 bolt for wall mounting. 5. Interior width meets the Chinese Standard 19'', Devices are adjustable vertically (by 1U = 44.45mm), and also can be adjusted forward and backward