VRK Series Enclosure
96-177 / rev 6e / 3-24-11
VRK Series Enclosure
®
Middle Atlantic Products
EIA/TIA Compliant
SEISMIC CERTIFIED
EXCEPTIONAL SUPPORT & PROTECTION™
The VRK Series 19” gangable enclosures
Narrow multi-bay rack optimized for video cable bundles
Features
• Fully welded construction provides the following weight capacities Static load capacity: 10,000 lbs - UL Listed load capacity: 2,500 lbs. Seismic certified load capacity: 740 lbs.
Enclosure Accessories
ADDITIONAL RAIL KIT
CONFIGURABLE TOPS
COPPER BUSS BAR
CRATING SERVICE
DOCUMENT POCKET
DOOR LATCH
GANGING HARDWARE
REMOVABLE SIDE PANELS
TOP RAILS
UNIVERSAL FRONT DOORS
WRINKLE TOUCH-UP PAINT
• 1/8" thick structural steel internal braces
• Features horizontal lacing bars made from 1/2” thick tubing
on 7” centers, which facilitate quick tie-and-slide lacing
• 2 pairs of 11-gauge 10-32 threaded rackrail with
numbered rackspace increments
• Optional solid, fully vented, plexi & vented plexi front doors available
• Open top with configurable top panel options
• Seismic Certified (when used with VRK-Z4 option) with an Ip value of 1.5
for details- see Master Catalog
or visit www.middleatlantic.com
• Durable black textured powder coat finish
VRK-44-31H
• UL Listed in the US and Canada
Architects’ and Engineers’ Specifications
OPTIONS
• Front doors shall be reinforced 16-gauge steel, model # FD-44 (solid), VFD-44 (vented, 22%
open area), LVFD-44 (vented, 64% open area), PFD-44 (plexi), PVFD-44 (vented plexi)
• Vented rear doors shall be 16-gauge steel, model # MW-VRD-44 (vented top and bottom),
MW-LVRD-x (vented, 64% open area, excludes 24 and 37 space rack) (x = # of rackspaces),
MW-CLVRD-44 (split rear door, vented, 76% open area)
• Removable keylocked side panels shall be model # SPN-44-312/SPN-44-36
• Top panels, 16-gauge steel, multiple styles available including model # MW-ST (solid top),
MW-10FT (accepts 10” fan), MW-4FT (accepts four 4 1/2” fans), MW-6FT (accepts three
6” fans), MW-VT (vented top), MW-LA (accepts 6” & 12” wide cable ladders), MV-PVT
(31/36) vented pagoda adds 1.41” to top of rack)
• Keyless Latch, replaces keylock & fits front & rear doors, model # LATCH
• Lacer strip, heavily perforated, 77" long, 11-gauge steel, model # LACE
• Additional rail kit, 11-gauge, 10-32 threaded, sold in pairs, hardware included,
model # MV-RR44
• Seismic compliancy floor anchor brackets shall be model # VRK-Z4
C U S T O M I Z A B L E S P E C I F I C AT I O N C L I P S AVA I L A B L E AT M I D D L E AT L A N T I C . C O M
US: New Jersey • California • Illinois • Voice: 973-839-1011 Fax: 973-839-1976 • middleatlantic.com
Canada: Ontario • British Columbia • Voice: 613-836-2501 Fax: 613-836-2690 • middleatlantic.ca
96-177 / rev 6e / 3-24-11 / VRK Series Enclosure
EIA compliant 19” gangable equipment rack shall be Middle Atlantic Products model
# VRK-44-__(31,36)H. Suffix of LRD shall indicate a model without the standard vented latching
rear door. Overall dimensions of rack shall be 83-1/8”H x 22”W x __ (31.4,36)”D. Useable
height shall be 44 rackspaces, useable depth shall be __(29,33.6)”. Fully welded construction
provides a static load capacity of 10,000 lbs. and a UL Listed 2,500 lb. weight capacity. Rack shall
be constructed of the following materials: top and bottom shall be 14-gauge steel, horizontal braces
shall be 16-gauge steel welded to uprights of 16-gauge steel giving an 1/8” thick structure, all
structural elements shall be finished in a durable black powder coat. Rack shall include a locking,
latching rear door. Rack shall come equipped with two pairs of 11-gauge steel rackrail with tapped
10-32 mounting holes in universal EIA spacing. Rackrail shall be finished in black e-coat with
numbered rackspaces. Top and bottom of rack shall feature vertical slotted vent pattern. Sides of
rack shall feature 16 pre-installed horizontal lacing bars. Grounding and bonding stud shall be
1/4-20 threaded, installed in base of enclosure. VRK Series enclosures shall satisfy the 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, Seismic Use Group III,
Zone 4 or Seismic Design Category (SDC) “D” with lateral force requirements for protecting 740
lbs. of essential equipment in locations with the highest level of seismicity and top floor or rooftop
installations with an Importance factor (Ip) of 1.5 when used with MRK-Z4 seismic floor anchor
bracket. Rack shall be UL Listed in the US and Canada. VRK series enclosure shall be GREENGUARD
Indoor Air Quality Certified for Children and Schools. VRK series enclosure shall be RoHS EU
Directive 2002 / 95 / EC compliant. VRK shall be manufactured by an ISO 9001 and ISO 14001
registered company. Rack shall be warrantied to be free from defects in material or workmanship
under normal use and conditions for the lifetime of the rack.
VRK-44-31H/VRK-44-36H basic dimensions
All dimensions in inches unless otherwise noted [All bracketed dimensions are in millimeters]
SIDE VIEW
REAR VIEW
FRONT VIEW
10-32
threaded
rackrail
77.13
[1959]
horizontal
lacing bars
31.40 [797]/
36.00 [914]
BOTTOM VIEW
31.40 [797]/
36.00 [914]
22.87 [580]
.44 dia. - 4x
22.00
[558]
1/4 - 20 X 5/8”
grounding and
bonding stud (2
places only)
27.26 [692]/
31.86 [809]
17.13
[435]
20.38
[517]
29.82 [757]/
34.42[874]
1.56 [39]
TOP OPTIONS
one gang
electrical box
knockout
22.00 [558]
TOP VIEW
19.50
[495]
83.13
[2111]
19.25
[489]
.79 [20]
removable plate opening
( accommodates
2 space panel )
MW-10FT accepts 10” fan
MW-10FT-550CFM
includes 10” fan
MW-10FT-FC includes
10” fan and fan
controller
MW-6FT accepts 6” fans
MW-6FT-660CFM
includes 6” fans
MW-4FT accepts 4-1/2”
fans
MW-4FT-380CFM
includes 4-1/2” fans
MW-4QFT-FC includes
4-1/2” quiet fans and fan
controller
MW-LA accepts 6”,
9” and 12” width
cable ladder
MW-ST solid
MW-VT slot
vent
MW-LVT
64% open
area
Middle Atlantic Products
US: New Jersey • California • Illinois • Voice: 973-839-1011 Fax: 973-839-1976 • middleatlantic.com
Canada: Ontario • British Columbia • Voice: 613-836-2501 Fax: 613-836-2690 • middleatlantic.ca
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