Fitting any Standard 19" Server Racks or Cabinets and can Hold your IT, Data, Networking, or Other Non-rack Mount Equipments less than 12" Deep. Product Size: 1U Height x 19" Width x 12" Depth (30.5 cm); Usable size: W 17.2" x D 9.90" ( 43.7 x 30.2 cm) Good Airflow: The Ventilated Design Maximizes Air Circulation and Keep your AV or Other Equipments Cool. Durable: Made of High-quality Cold Rolled Steel with Powder Coated Finish. Make the 12" Rack Tray Durable. Max. Loading Capacity: 30 lbs Easy Assembly: Including Screw for Assembly and M6 Screws & Cage Nuts for Installation. Only Need 2 Steps to Assemble the Holding Brackets onto the Shelf.