StarTech.com Server Rack Shelf - 1U - 330lbs(150 kg) max. capacity - 19.5 to 38in 4-Post Adjustable Mounting Depth -

The ADJSHELFHD2 1U 4-post Adjustable Heavy Duty Fixed Rack Mount Shelf lets you add a high-capacity, adjustable 1U shelf to virtually any standard 4-post 19-inch server rack or cabinet.

This heavy duty rackmount shelf can be adjusted from 19.5in to 38in (mounting depth) to fit your rack. Constructed using 1.0mm SPCC commercial grade cold-rolled steel, providing the ability to hold up to 150kg (330lbs) of equipment - a durable solution for storing large, non-rackmount pieces of equipment, heavy tools or peripherals in your rack or cabinet.