44 RU MRK Series 22 Inch Wide Rack, 42 Inches Deep
44 RU floor-standing rack, 22" wide, 42" deep, featuring seismic rating and 2500 lbs UL load capacity
The Middle Atlantic MRK-4442 is a 44 RU floor-standing rack designed for high-performance environments requiring a rugged, space-saving enclosure. This frame-only configuration features a 22" width and a 42" depth, providing a usable depth of 39.6" and a usable height of 77.13". Built with fully welded construction for maximum strength, it is TAA compliant and carries UL Listed and ASCE certifications. This rack is seismic rated with a seismic load capacity of 1050 lbs (476.3 kg) and a UL load capacity of 2500 lbs (1,134 kg). For complex multi-bay installations, these racks are gangable and can be secured together when fully loaded. The design includes standard front and rear adjustable 10-32 threaded rackrails with numbered spaces, along with multiple lacing points and slotted rail brackets to provide cable management flexibility. This unit includes a standard configurable rear door but is sold as a frame-only configuration without side panels.
Specifications are supplied by the manufacturer. For complete details, check the Resources section.Key features
Specifications
Main specifications 8
| Depth | 42 in (106.7 cm) |
| Height | 83.13 in (211.2 cm) |
| Panel Width | 19 in (48.3 cm) |
| Rack Units | 44 RU |
| Shipping Weight | 190 lbs (86.2 kg) |
| UL Load Capacity | 2500 lbs (1,134 kg) |
| Usable Depth | 39.6 in (100.6 cm) |
| Usable Height | 77.13 in (195.9 cm) |
All other specifications 13
| Width | 22 in (55.9 cm) |
| Federal Ops Country of Origin | USA |
| Gangable | Yes |
| Product Configuration | Frame Only |
| Rack Rail Type | 10-32 |
| Rear Door | Yes |
| Seismic Rated | Yes |
| Side Panel | No |
| TAA Compliant | YesYes |
| UPC | 656747068867 |
| ASCE Number | 7-10 |
| Certifications | ASCETAAUL Listed |
| Seismic Load Capacity | 1050 lbs (476.3 kg) |
Resources
You'll need these with it
PD Slim High Density Vertical Power Strip, 24 Outlet, 20A
PD-2420SC-NS$330.30
44 RU Vented Front Door for ERK, MRK and WRK Racks, 64% Open
LVFD-44$792.00
Select Series PDU with RackLink™, 2 Outlet
RLNK-215$429.30
44 RU Lace Strip 4.75 Inches Wide with Tie Posts - 6 Piece
LACE-44-OWP$400.50
220 CFM Fan Top with Controller
MW-4QFT-FC$1,110.60
44 RU Vented Front Door for ERK, MRK and WRK Racks
VFD-44$694.80
550 CFM Fan Top with Controller
MW-10FT-FC$924.30
44 RU Copper Bus Bars, 1 Inch Wide
BB-44-1$296.10
44 RU Solid Front Door for ERK, MRK and WRK Racks
FD-44$440.10
380 CFM Fan Top
MW-4FT-380CFM$649.80
44 RU Rackrail 10-32 for MRK/VRK Series
MV-RR44$225.00
Select Series PDT Low Profile Vertical Power Strip with Dual Circuit, 10 Outlet, 20A Hardwired
PDT-2X520$418.50
Questions about this part
Is the MRK-4442 suitable for seismic installations?
Yes, this rack is seismic rated with a seismic load capacity of 1050 lbs (476.3 kg) and meets ASCE 7-10 requirements.
Can I expand this rack into a larger multi-bay enclosure?
Yes, the MRK series racks are gangable, meaning they can be bolted together when fully loaded for multi-bay setups.
What equipment can I mount in the MRK-4442?
It utilizes standard 19" panel width equipment with adjustable front and rear 10-32 threaded rackrails to accommodate various depths.
Does this rack include doors and side panels?
This specific SKU is a frame-only configuration that includes a standard configurable rear door but does not include side panels.
Which documents are available for submittals?
You can access the MRK Series 19" Gangable Enclosure A&E Specification Sheet, CAD Technical Specification Drawings, and Revit Models for your submittals.