Atlantic Middle 40 RU MRK Series 22 Inch Wide Rack 31 Inches Deep MRK-4031

Narrow Design for Large-Scale Multi-Bay Jobs

- Fully welded construction open sides
- UL Listed in the US and Canada
- Fully welded construction provides:
- Static load capacity: 10000 lbs.
- UL Listed load capacity: 2500 lbs.
- Seismic Certified load capacity: 1050 lbs.
- Seismic certified to the following codes and standards: 2007 & 2010 CBC; 2006 2009 & 2012 IBC; ASCE 7-05 (2005 Edition) & ASCE 7-10 (2010 Edition) and the 2006 & 2009 editions of NFPA 5000 for use in areas of high seismicity Zone 4 or Seismic Design Category (SDC) "D". These are designed for Mission Critical and/or High-Importance Installations in locations with the highest level of seismicity and top floor or rooftop installations including those within UBC and CBC Essential facilities or IBC ASCE 7 and NFPA 5000 Seismic Use Group III facilities. For all codes the Importance factor (Ip) is 1.5. Seismic Certified load capacity of 1050 lbs. when used with MRK-Z4 seismic floor anchor brackets.
- OSHPD approved for fixed equipment anchorage in California healthcare facilities
- Slim 22" OD width
- 1/2" 3/4" 1" and 1-1/2" electrical knockouts found on removable split rear plates top knockout plate additionally includes UHF/VHF antenna knockouts
- Available in 4 depths: 26.5" 31.5" 36" & 42 "
- 2 pairs of wider rackrail provide more interior room
- Racks with PRO suffix include two pair cage nut style rackrail
- Laser-cut 1/8" thick internal steel braces for strength
- 14-gauge steel tops & bottoms 16-gauge seamless steel sides
- Grounding and bonding stud installed in base
- Configurable open top accepts a number of top options
- Keylocked solid rear door standard
- Finished in a durable black textured powder coat