The Adjustable Shelf is designed to enhance storage solutions in server racks and cabinets, providing exceptional flexibility and durability. Its adjustable mounting depth allows users to fit a wide variety of equipment, making it ideal for both new and existing setups. This vented rack shelf promotes better airflow, helping to maintain optimal temperatures for stored devices. Constructed from heavy-duty materials, it assures strength and stability for even the most demanding applications. Highlights: UNIVERSAL 19' FIT: This vented server rack mount shelf works with 19in 4-post server racks and has a fixed surface depth of 27.56in, and an adjustable mounting depth range of 19.5-38in for your data, networking or other small-form tools / equipment COMPACT DESIGN: The adjustable vented rack shelf features a very compact form factor, making it ideal for non-rackmount equipment, tools and peripherals in your home, studio or office space HEAVY-DUTY & DURABLE DESIGN: Constructed with SPCC commercial cold-rolled steel, the sturdy IT-grade cabinet shelf ensures long term durability and supports a total weight load of 330 lb / 150 kg VERSATILE FUNCTIONALITY: With a surface depth of 27.56in and adjustable mounting depth range of 19.5-38in, this shelf can work with any 19 inch 4-post cabinet or equipment rack - It provides additional storage space for your tools or A/V accessories THE IT PRO'S CHOICE: Designed and built for IT Professionals, Specifications: Dimensions (Overall): 3.4 inches (H) x 20.5 inches (W) x 30.3 inches (D) Weight: 15.05 pounds Assembly Details: Adult Assembly Required, Tools Not Provided Primary item stored: Hardware Number of Shelves: 1 Product Name: StarTech.com 1U Adjustable Mounting Depth Vented Rack Mount Shelf - Heavy Duty Fixed Rack Shelf - 250lbs / 113kg Material: Steel.