Part Number: SR42UBEXPNDNR3
- 42U premium open frame rack does not come with sides, doors or roof
- 4 interior vertical posts with unthreaded square hole openings
- Standard 24 in. (600 mm) width and 42 in. (1050 mm) depth for optimizing floor space
- Ships fully assembled for immediate deployment
- 3500 lbs (1588 kgs) stationary and rolling load capacity
- Rolls through standard 7-ft. (2.13 m) doorway on pre-installed 3 in. casters
- Comes with equipment mounting hardware (M6 cage nuts and M6 screws)
- 5-year limited warranty
Overview
This SmartRack 42U 4-post rack stores and organizes up to 3500 lbs (1588 kgs) of standard 19-inch rack equipment in 42U. The expansion model comes without sides, doors or roof. Front and rear vertical rails have square mounting holes that are adjustable in quarter-inch increments from 4 to 37 inches. Adjustment is quick with an easy-view depth index that ensures consistent rail placement without requiring time-consuming measurements. Each rack space is numbered for ready reference and supports toolless button-mount 0U installation of four compatible PDUs and cable managers.
All components of the SR42UBEXPNDNR3 are grounded to the enclosure frame. Front and rear threaded grounding points are provided for connection to the facility earth ground.
Heavy-duty pre-installed three-inch casters allow you to roll the open frame rack into the desired location, where you can secure it by adjusting the preinstalled levelers (the casters are intended for minor position adjustments and are not designed for moving the enclosure over long distances).
Features
- Ships fully assembled for immediate deployment
- Rolls into place on heavy-duty 3-inch pre-installed (and removable) casters
- Front/rear mounting rails adjust quickly and conveniently in 1/4-inch increments
- Easy-view depth index ensures consistent rail placement without requiring time-consuming measurements
- Toolless accessory mounting rails include slots for quick installation of compatible PDUs and vertical cable managers
- Each rail can accommodate two vertical PDUs or cable managers side-by-side (four items per enclosure).
- Includes mounting hardware: 50 M6 screws and 50 M6 cage nuts
- Textured powder-coat finish for tough resistance to environmental concerns, including deployment in warehouses.
- Maximum usable internal depth of 37 in./94 cm (front to rear rail)
- Weight ratings of 3500 lbs (1588 kgs). both stationary and rolling
- Built-in baying tabs allow premium open frame racks to be combined securely in rows with width set center to center at 24 in. or 600 mm to match standard data center floor tiles
- Heavy-duty leveling feet allow even positioning on uneven floors
- Rolls easily through standard commercial doorways
- All components are grounded to the premium open frame rack structure, which includes multiple connections for facility ground
- Open top, front, sides and bottom for cable access
- Included stabilizing brackets used for shipment and can be reattached on the inside or outside of the rack
Package Includes
- SmartRack 42U Standard-Depth 4-Post Premium Open Frame Rack
- (50) M6 screws
- (50) M6 cage nuts
- Owner's manual
Specifications
OVERVIEW
| UPC Code | 037332166630 |
| Device Compatibility | Patch Panel; Network Switch; UPS; Server |
| Rack Type | Open-Frame |
PHYSICAL
| Color | Black |
| Rack Height | 42U |
| Rack Depth | Standard |
| Maximum Device Depth (in.) | 37 |
| Minimum Device Depth (in.) | 4 |
| Shipping Dimensions (hwd / in.) | 79.00 x 24.50 x 40.00 |
| Shipping Weight (lbs.) | 200.00 |
| Unit Dimensions (hwd / in.) | 78.500 x 23.630 x 43.000 |
| Unit Weight (lbs.) | 150 |
| Weight Capacity - Rolling (lbs.) | 2250 |
| Weight Capacity - Stationary (lbs.) | 3500 |
| Number of Vertical Mounting Rails | 4 |
FEATURES & SPECIFICATIONS
| Grounding Details | Front and Back door frames |
| Pre-Installed Casters | Yes |
STANDARDS & COMPLIANCE
| Product Certifications | IEC 60297-3; UL 60950-1 |
| Product Compliance | RoHS; EIA/ECA-310-E; UKCA |
WARRANTY & SUPPORT
| Product Warranty Period (Worldwide) | 5-year limited warranty |
Questions & Answers
It's important to ensure that the server rack is properly cooled, and cold airflow is sufficient to prevent overheating and equipment failure. If you plan on buying a portable or in-rack air conditioner, and need to know how much cooling power you need, here are some helpful tips.
The amount of heat that a server rack produces depends on the type of equipment in the rack, the number of devices installed, and the workload of the equipment. As a general rule, a fully loaded server rack can produce anywhere between 4 and 20 kilowatts of heat.
Further Reading: Server Racks Explained
Need more help? Contact Technical Support
You can approximate the heat produced by a server rack (and therefore its cooling needs) by calculating the total heat output of all the devices in the rack. Almost all the power consumed by IT devices is converted into heat, so a server that consumes 300W will have a thermal output of approximately 300W (multiply by 3.41 to convert watts to BTU/h).
If your rack includes a UPS, it's even easier. Use the power capacity of the UPS to estimate the cooling load. For example, if the UPS has an output capacity for 1,800 watts, assume the thermal output is 1,800 watts also.
Further Reading: Server Racks Explained
Need more help? Contact Technical Support
Accessories
Data Center & IT Rack Cooling
| Model Number | Description | |
|---|---|---|
 |
SRFAN3U | SmartRack 3U Fan Panel - 3-120V high-performance fans; 210 CFM; 5-15P plug |
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SRXFAN3U | SmartRack 3U Fan Panel - 3 208-240V high-performance fans; 315 CFM; C14 inlet |
Cable Management
| Model Number | Description | |
|---|---|---|
 |
SRCABLEDUCT1U | SmartRack 1U Horizontal Cable Manager - Finger duct with cover |
 |
SRCABLEDUCT1UHD | SmartRack 1U High Capacity Horizontal Cable Manager - Finger duct with dual-hinge cover |
 |
SRCABLEDUCT2UHD | SmartRack 2U High Capacity Horizontal Cable Manager - Finger duct with dual-hinge cover |
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SRCABLEDUCTVRT | SmartRack 6 ft. (1.83 m) Vertical Cable Manager - Double finger duct with cover & toolless mounting |
 |
SRCABLERING1U | SmartRack 1U Horizontal Cable Manager - Flexible ring type |
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SRCABLERING2U | SmartRack 2U Horizontal Cable Manager - Flexible ring type |
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SRCABLERINGVRT | SmartRack 6 ft. (1.83 m) Vertical Cable Manager - Flexible ring type & toolless mounting |
Accessories
| Model Number | Description | |
|---|---|---|
 |
4POSTRAILKIT | 4-Post Rack-Mount Installation Kit of select Rack-Mount UPS Systems |
 |
4POSTRAILKIT1U | SmartRack 4-Post 1U Universal Adjustable Rack-Mount Shelf Kit |
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SR1UPANEL10 | SmartRack 1U Blanking Panel Kit - Toolless Mounting, 10 Panels, Black |
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SR1UPANEL50 | SmartRack 1U Blanking Panel Kit, Toolless-Mounting, 50 pieces |
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SR42SIDE | SmartRack Side Panel with Key-Locking Latches for 42U Server Rack Cabinet, 1 Panel |
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SRBOLTDOWN | SmartRack Bolt-Down Kit - Secures stabilizing brackets or plates to facility floor |
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SRCAGENUTS | SmartRack Square Hole Hardware Kit with 50 M6 screws and washers |
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SRSHELF2P | SmartRack 2U Cantilever Fixed Shelf (60 lbs / 27.2 kgs capacity; 18-in. / 457 mm Deep) |
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SRSHELF4PHD | SmartRack Heavy-Duty Fixed Shelf (250 lbs / 113.4 kgs capacity; 26 in/660 mm Deep) |
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SRSHELF4PKYBD | SmartRack Keyboard Shelf (25 lbs / 11.3 kgs capacity; 16 in / 406 mm Deep) |
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SRSHELF4PSL | SmartRack Standard Sliding Shelf (50 lbs / 22.7 kgs capacity; 28.3 in/719 mm Deep) |
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SRSHELF4PSLHD | SmartRack Heavy-Duty Sliding Shelf (200 lbs / 90.7 kgs capacity; 28.3 in/719 mm Deep) |
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SRVRTBAR | SmartRack 42U Vertical Cable Management Bars |
 |
UPSHDEARKIT | Heavy-Duty 2-post Front Mounting Ear Kit |
Documents & Downloads
Documentation
Design Resources
Product Literature
Declarations of Conformity
Useful Web Pages
Product Images
