- 15U- RMU Number Markings on Rails for Easy and Fast Installations- 18r Depth, Used with All 19r Wide EIA Equipment- Supports up to 125lbs. of Equipment When Properly Mounted and Secured- Made with #12-24 Threaded Rack Rails- Self-Alignment Square Design for Fast Assembly- Rugged Heavy Duty Steel Construction- Black Textured Powder Coated