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Item#: N82E16816228003

Tripp Lite SR42UBEXP 42U SmartRack Premium Enclosure (no side panels included)

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  • Black
  • 3000 lbs stationary, 2250 lbs rolling Weight Capacity
  • Rack Enclosure

  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews


Tripp Lite's SR42UBEXP 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 more. The SR42UBEXP does not include side panels, making it ideal for expansion applications where several racks are bayed together. And as part of the SmartRack family, the SR42UBEXP is compatible with Tripp Lite's extensive range of rackmount accessories, enabling you to customize your solution to meet any requirement. The SR42UBEXP ships fully assembled for quick installation and comes with a 5-year warranty.

Optimized for Expanding Data Center Applications
SR42UBEXP Feature Focus
Simple Equipment Installation
Toolless Vertical Mounting Rails
Secure Equipment Access
Bottom Panels with Cable Cutouts
Vented Top
Integral Grounding System
Preinstalled Casters & Levelers

Optimized for Expanding Data Center Applications

The SR42UBEXP 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. No side panels are included, making the SR42UBEXP ideal for baying applications with several racks. The SR42UBEXP offers full compatibility with a wide range of airflow optimization accessories as well as cable management accessories. It features integrated baying tabs that make it easy to combine multiple enclosures in rows for expanding data center applications. This enclosure is also 100% compatible with today's state-of-the-art hot-aisle/cold-aisle data center configurations.

Simple Equipment Installation

The SR42UBEXP is compatible with all standard 19-inch rack equipment. It features front and rear pairs of vertical rails with square mounting holes. The rails are adjustable in quarter-inch increments to accommodate equipment depths from 4 to 37 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, when the rack is stationary, are capable of supporting up to 3,000 lbs. of equipment with included installation hardware. Each rack space within the enclosure is numbered for easy reference.

Toolless Vertical Mounting Rails

The SR42UBEXP features 2 adjustable vertical mounting rails that support toolless button-mount 0U installation of compatible PDUs and cable managers. Each rail can accommodate 2 vertical PDUs or cable managers side by side, for a total of 4 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.

Secure Equipment Access

The SR42UBEXP 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. When bayed with enclosures that include side panels, the locking doors prevent unauthorized access to installed equipment, while making it easy for IT personnel to perform inspections, maintenance and equipment replacement. The split rear door design reduces clearance requirements for service access, allowing the enclosure to be placed closer to a wall.

Vented Top Panel with Cable Ports

The top panel of the SR42UBEXP 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 is provided with ports for cable routing, and is designed for quick, toolless removal with no need to disconnect cables. The SR42UBEXP is designed with an open bottom to facilitate cable access.

Integral Grounding System

All components of the SR42UBEXP 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 SR42UBEXP comes with preinstalled casters and leveling feet. The casters enable the SR42UBEXP to be easily maneuvered into the desired location, where it can then be secured in place by adjusting the levelers. The SR42UBEXP has a rolling load capacity of 2,250 lbs., 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 SR42UBEXP comes with a 5-year product warranty and a rapid-response repair/replacement policy that's unmatched in the industry.

Technical Specifications

  • Rack spaces: 42
  • Load capacity (rolling): 2,250 lbs.
  • Load capacity (stationary): 3,000 lbs.
  • Mounting depth: 4 to 37 in.
  • Mounting holes: Square (mounting hardware included)
  • Doors: Front/rear (lockable/reversible/perforated)
  • Side panels: Not included
  • Top panel: Vented/removable
  • Cable ports: Top panel (removable covers)
  • Height: 78.5 in.
  • Width: 23.63 in.
  • Depth: 43 in.
  • Weight: 203 lbs./li>
  • Material of construction: Steel
  • Warranty: 5 years
What’s in the Box

What's in the Box

  • SR42UBEXP SmartRack™ Enclosure Cabinet
  • 2 Door Keys
  • 50 x M6 Cage Nuts
  • 50 x M6 Screws
  • 50 x PVC Cup Washers
  • Owner's Manual
Tripp Lite
Rack Enclosures
Rack Space 42U 42U 42U
Weight Capacity 3000 lbs. stationary/ 2,250 lbs. rolling 3000 lbs. stationary/ 2,250 lbs. rolling 3000 lbs. stationary/ 2,250 lbs. rolling
Side Panels YES
Warranty 5-year 5-year 5-year

Learn more about the Tripp Lite SR42UBEXP


Tripp Lite


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


42U SmartRack enclosure with doors and NO side panels. This 'EXP' version is an expansion model for when several cabinets are bayed together. All the same features as the standard enclosure except no side panels are included.

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.
Industry Standard

Dimension & Weight

Unit Dimension
78.5" x 23.63" x 43.0"
Unit Weight
203 lbs.


Rack Units
Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 5 years
  • Limited Warranty period (labor): 0 day
  • Read full details
  • Return Policies
    • Return for refund within: 30 days
    • Return for replacement within: 30 days
  • This item is covered by's Standard Return Policy.
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