4-Post Open Frame Racks

4-Post Open Frame Racks combine the mounting security of a cabinet with the accessibility of a rack. Used in communication data center and telecommunication room applications, these adjustable depth racks support deeper, heavier network equipment and can be ganged with other 4-Post or 2-Post Open Frame Racks to expand existing systems.

4-post rack4-post racks

4-Post Open Frame Racks


  • Depth adjustable 450 mm to 1050 mm (17.7” to 41.3”) in 25 mm (.98”) increments
  • Universal EIA mounting pattern (5/8” x 5/8” x 1/2”) matches industry standards with 12-24 tapped or .375” square holes to fit 19” rack equipment
  • Compatible with 19” rack accessories
  • Available with nominal frame height of 6 ft. and 7 ft.
  • U markings on uprights make it easier to mount equipment
  • Floor mounting holes pre-drilled at .750” diameter
  • 12-24 rack mounting screws (20 pack) included with tapped hole model; order screws and cage nuts separately for square hole model
  • Includes complete assembly instructions
  • Ships flat for convenient transport via UPS or FedEx


  • Uprights on the tapped hole model are made of lightweight extruded aluminum (6063-T6 alloy)
  • Uprights on the square hole model are made from 12 gauge steel
  • Top and bottom angles made of extruded aluminum (6063-T6 alloy)
  • RAL 9005 black polyester powder paint finish
  • 2500 lb. (1134 kg) load rating

Industry Standards

  • EIA 310-D


Need a custom open frame rack?

We offer design services and solutions to meet the needs of any product specification, from examining current product prints to completing new product development. You can count on our expert resources and engineering capabilities to support any stage of your project, from concept to production. For more information on our capabilities download our Capabilities Brochure.



Cobalt Cab Video
Crenlo Enclosure Video