The SR42UBMDEXPNDNR3 is part of our new line of mid-depth rack enclosures. Our new line offers 36" (927mm) depth opposed to the standard 42" (1050mm).

The SR42UBMDEXPNDNR3 houses 3000 lb of standard 19-inch rack equipment in 42U. It is an expansion model that comes without sides, doors or roof. The front and rear pairs of vertical rails have square mounting holes that are adjustable in quarter-inch increments from 4 to 31 inches. Adjustment is quick and an easy-view depth index ensures consistent rail placement without requiring time-consuming measurements. Each rack space within the enclosure is numbered for ready reference and supports tool-less button-mount 0U installation of up to four compatible PDUs and cable managers.

All components of the SR42UBMDEXPNDNR3 are grounded to the enclosure frame. Front and rear threaded grounding points are provided for connection to the facility earth ground.

To simplify deployment, the SR42UBMDEXPNDNR3 comes with preinstalled 3" casters that enable it to be easily maneuvered into the desired location, where it can be secured by adjusting the preinstalled levelers. Note: the casters are intended for minor position adjustments and are not designed for moving the enclosure over long distances.

The SR42UBMDEXPNDNR3 comes with a 5-year product warranty. As part of the SmartRack family, the SR42UBMDEXPNDNR3 is compatible with Tripp Lite's extensive range of rackmount accessories, enabling you to customize your solution to meet any requirement.

• 42U Mid-Depth 4-Post SmartRack Premium Open Frame Rack (No Sides, Doors or Roof)
• 50 x M6 Cage Nuts
• 50 x M6 Screws
• Stabilizing Brackets
• Owner's Manual

• Grounding lug: Front and Back door frames
• 4 Interior vertical posts with unthreaded square hole openings
• Preinstalled heavy duty 3" casters and leveling feet
• Rolls through standard 7 foot doorway
• Front and rear sets of equipment mounting rails adjust in 1/4" increments. Adjustment is quick and convenient. The easy-view depth index ensures consistent rail placement without requiring time-consuming measurements.
• Tool-less accessory mounting rails (2 rails per enclosure) include slots for quick installation of compatible PDUs and vertical cable managers. Mounting slots are arranged in an industry-standard pattern compatible with a wide variety of accessories. Each rail can accommodate two vertical PDUs or cable managers side-by-side (four items per enclosure).
• Maximum usable internal depth of 31 inches/787 mm (front to rear rail).
• Built in baying tabs allow premium open frame racks to be combined securely in rows. Center-to-center width can be set at 600mm or 24" to match standard data center floor tiles.
• Leveling feet extend to allow premium open frame racks to be positioned on uneven floors. Levelers are removable.
• Compact design allows the premium open frame racks to roll through standard height commercial doorways.
• Convenient grounding system. All components are grounded to the premium open frame rack structure which includes multiple connections for facility ground.
• Open top and bottom for cable access.

• UL60950
• CE
• EIA/ECA-310
• IEC 60297-3-100
• DIN 41494
• Tested to NOM (Mexico)