Middle Atlantic® R2 Series Seismic Open Frame Rack

Safely Secure Datacom/Telecom Components in Environments Prone to Seismic Activity

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What's special about this seismic rated 2-post rack?

  • Heavy duty 2-post rack with 44 RU of vertical space provides high-density component and hardware mounting, while withstanding some of the most grueling seismic environments
  • Hole pattern on the top accommodates the installation of a variety of cable ladders to provide extra cable management and strain relief for high-density cabling
  • Durable, fully welded steel construction is certified to withstand seismic Zone 4 conditions in upper floor installations, with a load capacity of up to 850 lbs and an IP value of 1.5
  • Click for More Features
RoHS Compliant

The R2 Series Seismic 44 RU Open Frame 2-Post Rack from Middle Atlantic® is specially engineered to withstand heavy vibration due to seismic activity. This heavy duty 2-post rack is seismic certified to provide a secure mounting solution for 850 lbs of essential equipment in upper floor installations. The R2 Series rack features marked space increments on each rail for fast and accurate equipment mounting, as well as a convenient hole pattern for optional cable management additions or ganging to existing structures.


MA-R2-44S Middle Atlantic R2 Seismic Open Frame Rack, 44 U 83" H x 21.5" W x 15" D 80 lbs
MA-RLA-CC Vertical Cable Manager 82.7" H x 5" W x 6" D 20 lbs
MA-U2MS Vented 2 RU Center Mount Shelf, 50 lbs Weight Capacity 3.5" H x 19" W x 18" D 8.7 lbs
MA-HG Premium 10-32 Rack Screws QTY 100 - Black Gloss
  • EIA compliant 19" rails are constructed from incredibly strong 1/8" thick steel, with #10-32 threads on both the front and rear channels to provide easy installation of standard rackmount equipment and hardware
  • Heavy duty, 3/8" thick by 15" deep solid steel base provides a high level of stability and reliability in the event of an earthquake or other seismic disturbance
  • Hole pattern on the sides of each rail allows for cable lacing, ganging to existing racks or enclosures, and/or installation of optional cable manager
  • Finished in a durable black powder coat to provide lasting quality and minor abrasion protection
  • Grounding stud installed in the base to help disperse built-up static charges
  • Ships assembled and ready to install
  • Seismic certified to the UBC 1997, CBC Seismic Zone 4, IBC 2000, IBC 2003, 2002 ASCE Standard 7, and 2003 NFPA 5000 Seismic Use Group III lateral force requirements
  • GREENGUARD Indoor Air Quality Certified for use in schools or other environments with children
  • RoHS compliant
  • Made in the USA Made in the USA

diagrams of R2 seismic cabinet

PART # MA-R2-44S
Overall Height 83"
Usable Height 77"
Width 21.5"
Depth 15"
Rack Spaces 44 RU
Weight Capacity 850 lbs
Rail Construction 11 - gauge Steel
Construction 0.375" Thick Steel
Weight 80 lbs
Compliance UBC 1997
CBC Seismic Zone 4
IBC 2000
IBC 2003
2002 ASCE Standard 7
2003 NFPA 5000 Seismic Use Group III Lateral Force Requirements



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