Middle Atlantic MRK-4426

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: 10,000 lbs.
- UL Listed load capacity: 2,500 lbs.
- Seismic Certified load capacity: 1,050 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 1,050 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