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Item#: 9SIA91N4D33908

Tripp Lite SR42UBEXPND 42U 4-Post SmartRack Premium Open Frame Rack

Ships from United States. Most customers receive within 6-10 days.

Sold and Shipped by PC Supply a-seller

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  • Black
  • 3000 lbs stationary / 2250 lbs rolling load capacity Weight Capacity
  • 4 Post Open Frame Rack

  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

Product Description

Tripp Lite’s SR42UBEXPND is the ideal solution for secure, high-density server and networking applications in IT environments. This premium SmartRack™ Open Frame Rack is packed with features designed to simplify rack equipment installations and rack equipment maintenance: top-panel cable routing ports, adjustable mounting rails, toolless vertical PDU mounting and more. The SR42UBEXPND does not include side panels or doors, making it ideal for expansion applications where several racks are bayed together in a secure environment. And as part of the SmartRack family, the SR42UBEXPND is compatible with Tripp Lite’s extensive range of rackmount accessories, enabling you to customize your solution to meet any requirement. The SR42UBEXPND ships fully assembled for quick installation and comes with a 5-year warranty.

Optimized for Data Center Applications

Feature Focus


Key Features

Optimized for Data Center Applications
The SR42UBEXPND is optimized for data center and other high-density IT applications. Its massive ventilation capacity meets or exceeds server manufacturer requirements. No doors or side panels are included, making the SR42UBEXPND ideal for baying applications with several racks. The SR42UBEXPND 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 data center applications. This enclosure is also 100% compatible with today’s state-of-the-art hot-aisle/cold-aisle data center configurations.

Easy View Depth Index

Simple Equipment Installation
The SR42UBEXPND 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 are capable of supporting up to 3000 lbs. of equipment with included installation hardware. Each rack space within the enclosure is numbered for ready reference.

Toolless Vertical Mounting Rails

Toolless Vertical Mounting Rails
The SR42UBEXPND 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.

Vented Top Panel

Vented Top Panel with Cable Ports
The top panel of the SR42UBEXPND 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 SR42UBEXPND is designed with an open bottom to facilitate cable access.

Integral Grounding System

Integral Grounding System
All components of the SR42UBEXPND 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

Preinstalled Casters and Leveling Feet
To simplify deployment, the SR42UBEXPND comes with preinstalled casters meant for minor position adjustments and leveling feet to stabilize the rack once positioned. The casters enable the SR42UBEXPND to be easily maneuvered into the desired location within the final installation area, where it can then be secured in place by adjusting the levelers. The SR42UBEXPND has a rolling load capacity of 2250 lbs., enabling rack equipment to be installed in the enclosure prior to final deployment.

Open Bottom

Peace of Mind
The SR42UBEXPND 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): 2250 lb
Load capacity (stationary): 3000 lb
Mounting depth: 4 to 37 in.
Mounting holes: Square (mounting hardware included)
Doors: Not included
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: 142 lb
Material of construction: Steel
Warranty: 5 years

What's in the Box

What's in the Box

  • SR42UBEXPND SmartRack™ Enclosure Cabinet
  • Installation Hardware

Rack Enclosures
Model Rack Space Weight Capacity (Stationary) Doors Side Panels Warranty
SR42UB 42U 3000 lbs YES YES 5-year
SR42UBEXP 42U 3000 lbs YES NO 5-year
SR42UBEXPND 42U 3000 lbs NO NO 5-year

Learn more about the Tripp Lite SR42UBEXPND


Tripp Lite


4 Post Open Frame Rack
Rack Units
Weight Capacity
3000 lbs stationary / 2250 lbs rolling load capacity


42U SmartRack Premium open frame rack.

4 interior vertical posts with unthreaded square hole openings.

Standard 24" width for optimizing floor space.

Ships fully assembled.

Preinstalled casters and leveling feet.

Rolls through standard 7 foot doorway.

Includes 50 pieces of M6 cage nuts and 50 pieces of M6 screws.
Included Accessory
EIA-310-D, IEC 60297-3-100, DIN 41494, RoHS, UL 60950

Dimension & Weight

Unit Dimension
78.5" x 23.63" x 43.0"
Unit Weight
142 lbs.
Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 5 years
  • Limited Warranty period (labor): 5 years
  • Read full details
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