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Tripp Lite > 
Item#: N82E16816228002

Tripp Lite SR42UB 42U Rack Enclosure Server Cabinet

  • Black
  • 3000 lbs stationary
  • 2250 lbs rolling Weight Capacity
  • Rack Enclosure
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Get more from your network rack enclosures! Tripp Lite's SR42UB is the ideal solution for secure, high-density server and networking applications in IT environments. This premium SmartRack™ Enclosure Cabinet is packed with features designed to simplify rack equipment installations and rack equipment maintenance: top-panel cable routing ports, perforated doors to promote efficient airflow, adjustable mounting rails, toolless vertical PDU mounting and others. And as part of the SmartRack family, the SR42UB is compatible with Tripp Lite's extensive range of rackmount accessories, enabling you to customize your solution to meet any requirement. The SR42UB ships fully assembled for quick installation and comes with a 5-year warranty.

Optimized for Networking Applications
SR42UB Feature Focus

Optimized for Networking Applications

The SR42UB is optimized for data center and other high-density IT applications. Its massive front-to-rear ventilation capacity (door perforation pattern providing 65+% open space) meets or exceeds server manufacturer requirements. The SR42UB offers full compatibility with a wide range of airflow optimization and cable management accessories. It features integrated baying tabs that make it easy to combine multiple enclosures in rows for data center applications. This enclosure is also 100% compatible with today's state-of-the-art hot-aisle/cold-aisle data center configurations.

Easy Equipment Installation with Standard Width and Adjustable Depth

With a standard 24-in width, the SR42UB is compatible with all 19-inch rack equipment. Its rails are adjustable in quarter-inch increments to accommodate equipment depths from 4 to 42 inches. Adjustment is quick and convenient—simply unscrew the rails, slide them to the desired depth and restore the screws. An easy-view depth index ensures consistent rail placement without requiring time-consuming measurements. The rails feature square mounting holes and are capable of supporting up to 3000 lb. of equipment with included installation hardware. Each rack space within the enclosure is numbered for ready reference.

Toolless Vertical Mounting Rails

The SR42UB features two adjustable vertical mounting rails that support toolless button-mount 0U installation of compatible PDUs and cable managers. Each rail can accommodate two vertical PDUs or cable managers side by side, for a total of four units per enclosure. These vertical mounting rails make it easier to route power and cabling to installed rack equipment. They also reduce cord and cable clutter that could block airflow through the enclosure.

SR42UB Features
Preinstalled Casters & Levelers

Secure Equipment Access

The SR42UB is designed to provide a safe, secure installation solution for mission-critical rackmount equipment. It features locking, reversible, removable front and rear doors, perforated to promote efficient airflow, and locking, removable side panels. Locking doors and side panels prevent unauthorized access to installed equipment while making it easy for IT personnel to perform inspections, maintenance and equipment replacement. The side panels are half size (two per side) for ease of removal and reinstallation. The split rear door design reduces clearance requirements for service access, allowing the enclosure to be placed closer to a wall. The SR42UB meets all Payment Card Industry Data Security Standard (PCI DSS) requirements.

Vented Top Panel with Cable Ports

The top panel of the SR42UB is furnished with vents designed to help remove warm air from the enclosure and draw in cool air by convection. It also supports installation of standard user-supplied case fans. The top panel has ports for cable routing, and is designed for quick, toolless removal with no need to disconnect cables. The SR42UB is designed with an open bottom to facilitate cable access.

Integral Grounding System

All components of the SR42UB are grounded to the enclosure frame. Front and rear threaded grounding points are provided for connection to the facility earth ground. The removable front and rear doors feature quick-release ground wires.

Preinstalled Casters and Leveling Feet

To simplify deployment, the SR42UB comes with preinstalled casters and leveling feet. The casters enable the SR42UB to be easily maneuvered into the desired location, where it can then be secured in place by adjusting the leveling feet. The SR42UB has a rolling load capacity of 2250 lb., enabling rack equipment to be installed in the enclosure prior to final deployment. Note: the casters are intended for minor position adjustments within the final installation area only and are not designed for moving the enclosure over long distances.

Peace of Mind

The SR42UB comes with a 5-year product warranty and a rapid-response repair/replacement policy that's unmatched in the industry.

Technical Specifications

  • Tripp Lite SR42UB SmartRack™ Enclosure
  • Rack spaces: 42
  • Load capacity: 3000 lb. stationary/2250 lb. rolling
  • Mounting depth: 4 to 37 in.
  • Mounting holes: Square (mounting hardware included)
  • Door: Lockable/reversible/perforated
  • Side panels: Lockable/removable/perforated
  • Top & bottom panels: Vented
  • Cable ports: Top and bottom panels (removable covers)
  • Height: 78.5 in.
  • Width: 23.63 in.
  • Depth: 43 in.
  • Weight: 281 lb.
  • Material of construction: Steel
  • Warranty: 5 years
  • Agency Approvals: EIA-310-E; NOM (Mexico); UL60950; RoHS

What's in the Box

  • SR42UB SmartRackâ„¢ Enclosure
  • (4) side panels
  • (4) side panel locks
  • (2) door & side panel keys
  • (50) M6 screws
  • (50) M6 washers
  • (50) M6 cage nuts
  • Owner's Manual
Tripp Lite
SmartRack™ Enclosures
Rack Space 12U 25U 42U 48U
Weight Capacity 250 lb. 3000 lb. 3000 lb. 3000 lb.
Meets PCI Standards Yes Yes Yes Yes
Warranty 5-year 5-year 5-year 5-year

Learn more about the Tripp Lite SR42UB


Tripp Lite


Rack Enclosure
Rack Units
Weight Capacity
3000 lbs stationary
2250 lbs rolling

Dimension & Weight

78.5" x 23.63" x 43.0"


4 interior vertical posts with unthreaded square hole openings
Standard 24" width for optimizing floor space
Ships fully assembled
Massive front to rear ventilation capacity
Locking, removable, reversible front and rear doors
Locking, removable side panels keyed alike with doors
Preinstalled casters and leveling feet
Rolls through standard 7 foot doorway

Manufacturer Warranty

5 years limited

Quick Info


  • Limited Warranty period (parts): 5 years
  • Limited Warranty period (labor): 0 day

Customer Reviews of the Tripp Lite SR42UB

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  • John E.
  • 2/10/2013 3:18:03 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsEasy to setup, good quality

Pros: This enclosure is large and suited my needs perfectly. The roller wheels make it easy to move around and get it right where you want it. The four doors make installing items quick and easy.

Cons: I found installing the screw posts slightly more difficult than some other cabinets we use. It's hardly a con, but still...I drew a little blood. Then again, I've always heard a little blood makes a build great.

Other Thoughts: I love this enclosure.

Did you find this review helpful? Yes No

  • David H.
  • 1/22/2011 9:38:05 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsAwesome rack!

Pros: This rack is very well built and highly modular. Tripp Lite put a fair amount of thought into the design of the rack. And just like the other manufacturers, if you use their PDUs and cable management stuff, it is a very snap-in setup.

One great aspect of the modularity, though, is the fact that you can move the vertical rails while the servers are racked. This saved me today when trying to squeeze our new blade chassis in and the rails wouldn't fit. Unlike other racks where I've had to remove all of the equipment to make these adjustments (making for a long night in a cold colo facility), I was able to get this done in 15 minutes during the day. Yay!

Cons: My biggest gripe is the overall depth when using vertical PDUs and cable management trays. The stuff snaps in with no tools, but then makes it really hard to get to the screws on the back end of the server rails or switches. Nothing that a right-angle screwdriver doesn't solve, but still...

Also, the door latching hardware that pins into the rack chassis didn't quite match up with the holes. A little Paul Sr. (OCC) persuasion and that was fixed, though. Probably got twisted in shipping.

Other Thoughts: This is a fantastic rack for the money. I've spent more on racks with fewer features and so I'm glad that I gave Tripp Lite a try. Their support has also been very good for some of the UPS equipment I have.

2 out of 2 people found this review helpful. Did you? Yes No

  • Anonymous
  • 2/10/2010 2:45:45 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsCleaning up

Pros: High Quality rack that makes getting at anything that you have installed in it easy to get at. Options for mounting just about anything anywhere in it.

Cons: One of the side panel locks was busted when I recieved it but Tripp Lite came through and replaced it for me.

Other Thoughts: Its a good rack. I like the fact that I can lock it up and know all my servers are safe even when the room is not.

1 out of 1 people found this review helpful. Did you? Yes No

  • Dan S.
  • 12/2/2009 9:29:04 AM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsNice!

Pros: Nice, modular enclosure. Two locking panels per side (4 total) make it easy to remove and access equipment from the side. Rear doors are split for easy access in tight locations. Vertical rack rails are easily moved front-back for adjustable depth. Rack comes with extra vertical (removable) rails in the rear for power strip / cable route mounting (note that these are specially built for this type of application and are not the standard rack-rails). Lots of alternative mounting points on sides, top, and the special rails in the rear (even on the sides of the standard rails). Top is mostly covered with plenty of cable-routing options. Casters are multi-directional (not just front-back like a refrigerator), making it easy to roll around.

Cons: None.

Other Thoughts: Bought this rack to install in my home office & installed all my stereo equipment, satellite receivers, etc and ran the connectors through the wall to the family room for a nice, uncluttered TV viewing setup.

Did you find this review helpful? Yes No

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Item#: N82E16816228002
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