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Tripp Lite > 
Item#: 9SIA8N24NN8783

Tripp Lite SR42UBKD 42U Rack Enclosure Server Cabinet Knock-Down

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

Sold and Shipped by TELeasy a-seller

Purchases from these Sellers are generally covered under our Newegg Marketplace Guarantee.
Marketplace Seller
  • Black
  • 3000 lbs stationary
  • 2250 lbs rolling Weight Capacity
  • Rack Enclosure

  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews


Tripp Lite's SR42UBKD 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. And as part of the SmartRack family, the SR42UBKD is compatible with Tripp Lite's extensive range of rackmount accessories, enabling you to customize your solution to meet any requirement. The SR42UBKD ships unassembled (once assembled it is identical to Tripp Lite SR42UB) for easy transportation and positioning and also comes with a 5-year warranty.

Easy, Convenient Assembly

To simplify deployment, the SR42UBKD ships as a disassembled kit. This allows for transportation through elevators, doorways, stairs and other confined spaces before assembling the enclosure for easy positioning. Assembly is simple and all of the necessary hardware is included. Once assembled, the enclosure is identical to Tripp Lite's standard SR42UB rack.

Optimized for Data Center Applications

SR42UBKD Feature Callouts

SR42UBKD Toolless Mounting


SR42UBKD Easy-View Depth Index


SR42UBKD Vented Top Panel


SR42UBKD Integral Grounding System


SR42UBKD Locking Front Door


SR42UBKD Locking, Removable Side Panels


SR42UBKD Preinstalled Casters and Leveling Feet


SR42UBKD Open Bottom


Optimized for Data Center Applications

The SR42UBKD 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 SR42UBKD 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.

Simple Equipment Installation

The SR42UBKD 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

The SR42UBKD 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.

Secure Equipment Access

The SR42UBKD 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.

Vented Top Panel with Cable Ports

The top panel of the SR42UBKD 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 SR42UBKD is designed with an open bottom to facilitate cable access.

Integral Grounding System

All components of the SR42UBKD 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.

Peace of Mind

The SR42UBKD comes with a 5-year product warranty and a rapid-response repair/replacement policy that's unmatched in the industry. This rack also meets enclosure requirements towards PCI DSS (Payment Card Industry Data Security Standard) compliance.

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: Front; rear (lockable/reversible/perforated)
  • Side panels: 2 per side (lockable/removable/perforated)
  • Top panel: Vented/removable
  • Cable ports: Top panel (removable covers)
  • Height: 78.5 in.
  • Width: 23.63 in.
  • Depth: 43 in.
  • Weight: 281 lb
  • Material of construction: Steel
  • Warranty: 5 years


What's in the Box

  • Unassembled SR42UBKD SmartRack™ Enclosure Cabinet
  • (4) Side Panels
  • (4) Side Panel Locks
  • (2) Keys for Door and Side Panels
  • (50) M6 Screws
  • (50) M6 Cage Nuts
  • (50) M6 Washers
  • Owner's Manual


Tripp Lite
Rack Enclosures
Rack Space 42U 42U
Weight Capacity (Stationary) 3000 lbs 3000 lbs
Doors Yes Yes
Side Panels Yes Yes
Shipping Disassembled Kit Fully assembled
Warranty 5-year 5-year

Learn more about the Tripp Lite SR42UBKD


Tripp Lite


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


Ships unassembled for easy transport and assembly in confined spaces. Once assembled, it is identicle to the standard SR42UB enclosure.
42U SmartRack enclosure with doors and side panels
4 interior vertical posts with unthreaded square hole openings
Standard 24" width for optimizing floor space
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

Dimension & Weight

Unit Dimension
78.5" x 23.63" x 43.0"


Rack Units
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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