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Black open-frame server rack, 42U tall, 36 inches deep, square-hole rails, casters and levelers fitted

Tripp Lite

Tripp Lite SR42BMDEXPNDNR3 42U 19" 36" Depth Server Rack

SKU CH-MBN6-C8D4S MPN SR42BMDEXPNDNR3

A 42U open-frame rack with 36-inch depth holds 3000 lb of 19-inch equipment and includes 50 cage nuts, 50 screws, stabilising brackets and pre-installed casters

  • Rack height42U
  • Spec summaryForm Factor:19 in 42U
  • Product dimensionsHeight:78.5 in × Width:23.6 in × Depth:36.0 in
  • Product weight94 lb (42.6 kg)
  • Product typeRack Frame
  • Key featuresPackage Contents: 42U Mid-Depth 4-Post SmartRack Premium Ope
  • Holds 3000 lb of 19" equipment in 42U
  • 36" depth saves space versus standard 42" cabinets
  • Square-hole rails adjust from 4 to 31 inches in quarter-inch steps
  • Numbered rack spaces simplify installation and tool-less 0U accessory mounting
  • Pre-installed casters and levelers allow easy positioning and secure levelling

42U 19-Inch Open Frame Rack

The Tripp Lite SR42BMDEXPNDNR3 is a 42U mid-depth open frame rack built to hold standard 19-inch equipment. It supports up to 3000 lb of gear while occupying a 36-inch depth footprint instead of the usual 42 inches. This expansion model ships without side panels, doors or a roof for maximum airflow and cable access.

Quick Rail Setup With Index Marks

Front and rear rails use square mounting holes adjustable in quarter-inch increments from 4 to 31 inches. A visible depth index lets installers align both rail pairs consistently without repeated measuring. Fifty M6 cage nuts and screws are included, and pre-installed 3-inch casters plus levelers allow the 94 lb frame to be positioned and locked in place.

Stable Under Full Load

Numbered rack spaces simplify inventory and support tool-less 0U mounting for up to four compatible PDUs or cable managers. All metal components are bonded to the frame with front and rear grounding points provided for facility earth connection. The rigid welded construction maintains alignment when fully populated with heavy servers or storage arrays.

How it compares

Measured against everything we stock in Rack Cabinets & Shelves, at today’s prices. Recalculated every night.

Price $1,136.99
Pricier than about 90% of the 2,764 comparable items (median $106.99).

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Specifications

Product
Brand nameTripp Lite
Model nameSR42BMDEXPNDNR3
Product typeRack Frame
Size & build
Rack height42U
Product dimensionsHeight:78.5 in × Width:23.6 in × Depth:36.0 in
Product weight94 lb (42.6 kg)
Shipping weight113.40 kg
Package size2017 × 830 × 600 mm

Questions about this item

How can I confirm the rack is level and stable after positioning it with the pre-installed casters and levelers?

Adjust the pre-installed levelers until the frame sits firmly on the floor with no rocking; the casters are for minor positioning only and should not bear the full 3000 lb load.

Which mounting hardware and stabilising parts are included, and what must I supply separately?

The box contains the 42U open frame, 50 M6 cage nuts, 50 M6 screws, stabilising brackets and the owner's manual; side panels, doors, roof and any 0U PDUs or cable managers are not included.

When should I choose this 36-inch deep expansion frame instead of the standard 42-inch deep version?

Choose this model when floor depth is limited to about 927 mm and you do not need side panels, doors or a roof, while still requiring 42U height and 3000 lb capacity.

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