The RackSolutions 2U 2Post Center Mount Vented Shelf is designed to provide a sturdy, reliable solution for mounting IT and networking equipment in a 2Post relay or telco rack. With a depth of 20 inches (508 mm) and a weight capacity of 150 lbs (68 kgs), this shelf is perfect for supporting large and heavy equipment that may not normally be rack-mountable. The shelf includes side slots for securing equipment with straps and is EIA 310 compliant, ensuring compatibility with most 19" 2Post racks. It's compatible with racks featuring round, threaded, or square holes, offering universal usability.