The pro range of vented shelves we offer are designed for maximum airflow for your devices inside your 19 inch cabinet. With side vents and vents on the bottom of the shelf airflow circulates easily preventing overheating. This shelf has a 2U profile and is 250mm deep. Universal Black 19 inch width Black Weight Capacity: 25kg 250mm Deep Easily secure items with cable ties through the vents Rear Lip to prevent devices sliding Lip at the top of the 3U profile so 3U devices such as UPS s/poweramps are easily held in place.