RackSolutions 1U Modular Device Testing Sliding Rack Shelf provides an efficient and scalable solution for enterprise mobile app testing or in-house consumer device testing labs. By using modular shelves to mount devices in server racks, you can optimize space, improve organization, and increase density, making it ideal for cloud-based mobile app testing or dedicated device farms. The 28" shelf uses ball-bearing slide rails for smooth accessibility, allowing for faster device maintenance and testing. With a range of bracket options and compatibility with 19"� standard server racks, this modular shelf is a versatile and efficient addition to any testing environment.