A complete cable management system, the NEW telescoping lacer bars adjust to fit any Middle Atlantic Products rack. *Adjusts to fit front to rear or horizontally within any Middle Atlantic Products enclosure. *Provides for effective cable management and cable strain relief. *Accepts mounting of vertical lacer strips and thin power strips for a complete cable management system. Telescoping Range (from mounting hole to mounting hole): 36" to 50" Useable Depth of Rack (requires rear rackrail): 37-3/8" to 51-3/8". Pre-Pack Quantity: 2.