CONFIGURABLE MOUNTING OPTIONS: Shelf position is adjustable along the center mounting bracket for custom placement REMOVABLE EQUIPMENT STOPS: Easily adjust or remove the flanges for equipment stability or versatility VENTED DESIGN: Allows for optimal airflow to prevent equipment overheating HEAVY-DUTY SUPPORT: Holds up to 150 lbs (68 kgs) of equipment ideal for large electronics UNIVERSAL FIT: Compatible with round threaded or square holes in any standard EIA 19 2Post relay or telecom rack