ERK-RR27 - Support/Rack Middle Atlantic - Free user manual and instructions

Product Type	Rear Rack Rail Kit for ERK Series Enclosures
Brand	Middle Atlantic
Model	ERK-RR27
Rack Space	27U
Material	11-gauge steel
Finish	Black e-coat
Thread Size	10-32 threaded holes
Spacing	Universal EIA spacing, numbered rackspaces
Number of Rails	2 (sold as a pair)
Hardware Included	Mounting hardware for installation
Compatible Enclosures	ERK Series (e.g., ERK-4425KO, ERK-3525KO, etc.)
Weight Capacity	1000 lbs (453 kg) per pair (based on enclosure rating)
Installation	Bolts to front and rear of enclosure; adjustable depth
Maintenance & Cleaning	Wipe with a damp cloth; avoid harsh chemicals
Safety	Ensure proper mounting to prevent rack instability; do not exceed weight capacity
Regulatory Compliance	UL Listed (as part of ERK enclosure system)
Warranty	Lifetime warranty against defects in material or workmanship

Frequently Asked Questions - ERK-RR27 Middle Atlantic

What is the ERK-RR27 rear rail kit?

The ERK-RR27 is a 27U rear rack rail kit from Middle Atlantic, designed for use with ERK Series enclosures. It includes two 11-gauge steel rails with 10-32 threaded holes and mounting hardware.

What is the weight capacity of the ERK-RR27 rails?

Each pair of rails supports up to 1000 lbs (453 kg), consistent with the weight capacity of the ERK enclosure system.

What enclosures are compatible with the ERK-RR27?

The rails are designed for ERK Series enclosures of matching rack space (27U). They fit models like ERK-4425KO, ERK-3525KO, ERK-2125KO, etc. Ensure your enclosure model supports rear rails.

What hardware is included with the ERK-RR27?

The kit includes mounting screws, cage nuts, and washers for attaching the rails to the front and rear of the enclosure. All necessary hardware for installation is provided.

How do I install the ERK-RR27 rails?

1. Attach the front rail to the front rack posts using the provided hardware.
2. Adjust the depth and attach the rear rail to the rear posts.
3. Ensure the rails are level and tighten all bolts securely.

Are the ERK-RR27 rails adjustable in depth?

Yes, the rails can be adjusted to fit the depth of the enclosure, which is typically 23.47" (596 mm) usable depth for ERK models.

What is the finish of the ERK-RR27 rails?

The rails have a black e-coat finish that provides corrosion resistance and a professional appearance.

Can I use the ERK-RR27 rails with other brands of racks?

The rails are specifically designed for Middle Atlantic ERK enclosures. While they may fit other 19" racks, compatibility is not guaranteed. It is recommended to use with ERK series only.

What is the warranty for the ERK-RR27?

Middle Atlantic offers a lifetime warranty against defects in material and workmanship under normal use and conditions.

How do I clean the ERK-RR27 rails?

Clean with a soft, damp cloth and mild detergent if necessary. Avoid abrasive cleaners or solvents that may damage the e-coat finish.

USER MANUAL ERK-RR27 Middle Atlantic

ERK Series Ready-to-Assemble enclosure ships flat for simplified shipping and storage

Features

• 1,000 lb. [453kg] weight capacity
- 1/8" [3mm] thick structural steel internal braces
- 22" [559mm] OD width, 25" [635mm] OD depth
- 1/2", 3/4", 1" & 1-1/2" electrical knockouts on removable rear plates top and bottom, easily removable for cable pass-through Top plate additionally includes UHF / VHF knockouts
- Standard front, optional rear 11-gauge 10-32 threaded rackrail with numbered rackspace increments
- Optional front doors available
- Configurable top options
• Durable black textured powder coat finish
- UL Listed in the US and Canada
- Models available with or without locking rear door

Black server cabinet with open door and side panel, no visible text or symbols

ERK-4425KD

ENCLOSURE ACCESSORIES

ADDITIONAL RACKRAIL KIT CASTER BASE

COPPER BUSS BAR

CRATING SERVICE

DOCUMENT POCKET

DOOR LATCH

LEVELING FEET

CONFIGURABLE TOPS

TOP RAILS

UNIVERSAL FRONT DOORS

VENTED REAR DOORS

WRINKLE TOUCH-UP PAINT RISER BASES

for details - see Master Catalog or visit middleatlantic.com

Architects' and Engineers' Specifications

EIA compliant 19" ready-to-assemble equipment rack shall be Middle Atlantic Products model # ERK-25KD (refer to chart). Overall dimensions of rack shall be _H x 22" [559mm] W x 25" [635mm] D (refer to chart). Useable height shall be _ rackspaces, useable depth shall be 23.47" [596mm] (refer to chart). Weight capacity shall be 1,000 lbs. [453kg]. 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 integral structural side panels of 16-gauge steel giving an 1/8" [3mm] 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 one pair of 11-gauge steel rackrail with tapped 10-32 mounting holes in universal EIA spacing, black e-coat finish and numbered rackspaces. Rack shall include solid locking rear door standard, solid side panels with vertical slotted vent pattern at top and bottom and laser knockouts for cable pass-through. Top and bottom of rack shall feature vertical slotted vent pattern. Rack shall have a removable rear knockout panel with 1/2", 3/4", 1" and 1-1/2" electrical knockouts and BNC knockouts for UHF/VHF antennas installed in top. Grounding and bonding stud shall be 1/4-20 threaded, installed in base of enclosure. Rack shall be UL Listed in the US and Canada. ERK-25KD shall be GREENGUARD Indoor Air Quality Certified for Children and Schools. ERK-25KD shall be RoHS EU Directive 2002 / 95 / EC compliant. ERK-25KD shall be manufactured by an ISO 9001 and ISO 14001 registered company. Rack shall be warranted to be free from defects in material or workmanship under normal use and conditions for the lifetime of the product.

OPTIONS

• Front doors shall be 16-gauge steel & available as model #FD-XX (solid), VFD-XX (vented), PFD-XX (plexi) PVFD-44 (vented plexi), (X=# of rack spaces of ERK rack)
• Vented rear doors shall be 16-gauge steel & available as model #ERK-VRD-XX, (X=# of rackspaces of ERK rack)
• Top panels shall be 16-gauge steel, in 6 styles - model #ERK-ST (blank), #ERK-10FT (10" [254mm] fan), #ERK-4FT (three 4-1/2" [114mm] fans), #ERK-VT (vented), #ERK-10FT-FC (10" [254mm] fan with integrated fan control), #ERK-4QFT-FC (three 4-1/2" [114mm] fans with integrated fan control)
• Caster base, four casters shall have a total weight capacity of 1300 lbs. [590 kg], model # CBS-ERK-YY (Y= cabinet depth)
• Leveling feet model # LF, shall be 3/8" [10mm] threaded steel, adjustable from top or bottom
  • Keyless Latch, replaces keylock & fits front & rear doors, model # LATCH
• Lacer strip, heavily perforated, 78" [1981mm] long, 11-gauge steel, model # LACE
• Rear rail kit, 11-gauge, 10-32 threaded, sold in pairs, hardware included, model # ERK-RRXX (X=# of rackspaces)

* Add - LRD suffix to any of the above part #s to denote models without a locking rear door.

Part #	AOverall Height	BUseableHeight	COverall Depth		EBottomOpening Depth	FUseable Depth
			DOverall Height	EBottomOpening Depth
ERK-425K0	81.125 [2061]	77.00 [1956]	75.125 [1908]	25.00 [635]	20.25 [514]	23.47 [596]
ERK-352K0	65.375 [1661]	61.25 [1556]	59.375 [1508]	25.00 [635]	20.25 [514]	23.47 [596]
ERK-212K0	40.875 [1038]	36.75 [933]	34.875 [886]	25.00 [635]	20.25 [514]	23.47 [596]
ERK-1825K0	35.625 [905]	31.50 [800]	29.625 [752]	25.00 [635]	20.25 [514]
ERK-1025K0	21.625 [549]	17.50 [445]	15.625 [397]	75.00 [635]		23.47 [596]

forward-most position) 1.44 [37] solid/vented door 1.25 [32] pixel door

(with rackrail in

front door clearance

SECTIONAL VIEW

TOP VIEW OF ERK SIDE

REAR VIEW SIDE VIEW FRONT VIEW

REAR VIEW, TOP & BOTTOM
All dimensions in inches unless otherwise noted [All dimensions in brackets are in millimeters]

ERK top options

ERK-VT

ERK-10FT ERK-4FT ERK-10FT-FC* ERK-40FT-F
lasser konkouts confurable - 1 to 3 4-1/2" [114] fans
* Includes tan(s) and integrated thermostatic tan control

ERK-4FT ERK-4QFT-FC*