Description
The Eaton Tripp Lite SmartRack SR48UBEXPNDNR3 is a 48U standard-depth premium open frame rack designed for scalable data center deployments. Engineered for maximum flexibility, this expansion rack omits sides, doors, and a roof, allowing seamless baying with adjacent enclosures. It supports up to 3,500 lbs (1588 kg) of equipment, making it ideal for housing servers, UPS systems, patch panels, and network switches.
With adjustable square-hole mounting rails (from 4" to 37" deep), tool-less mounting slots for up to four PDUs or cable managers, pre-installed heavy-duty casters, and levelers, the SR48UBEXPNDNR3 ensures fast deployment, easy alignment, and rugged support in demanding IT environments. Fully grounded and compatible with standard 19" rack equipment, this rack delivers high-capacity performance and open-access convenience.
| Specification | Details |
|---|---|
| Model Number | SR48UBEXPNDNR3 |
| Rack Height | 48U |
| Rack Type | Premium Open Frame, 4-Post |
| Device Compatibility | Server, UPS, Patch Panel, Network Switch |
| Color | Black |
| Rack Depth | Standard (Max 37 in / 940 mm) |
| Mounting Rail Depth Range | 4 in – 37 in (adjustable in 1/4" increments) |
| Mounting Holes | Unthreaded square holes |
| Vertical Mounting Rails | 4 |
| Tool-less PDU/Cable Mounting Support | Up to 4 (button-mount 0U compatible) |
| Weight Capacity - Stationary | 3,500 lbs (1588 kg) |
| Weight Capacity - Rolling | 2,250 lbs (1021 kg) |
| Preinstalled Casters | Yes, 3" heavy-duty |
| Leveling Feet | Yes, removable for uneven floors |
| Grounding Points | Front and rear threaded |
| Finish | Textured powder coat |
| Shipping Dimensions (HWD) | 95" x 26" x 45" (241.3 x 66.04 x 114.3 cm) |
| Unit Dimensions (HWD) | 89" x 23.63" x 43" (228.6 x 60.02 x 105.41 cm) |
| Unit Weight | 163 lbs (73.94 kg) |
| Shipping Weight | 213 lbs (96.62 kg) |
| Certifications | UL 60950-1, RoHS, CE, UKCA |
| Warranty | 5-Year Limited Warranty |
Payment & Security
Your payment information is processed securely, and we do not store credit card details or access your credit card information.
Return Policy (Short Summary)
We offer a 30-day return window for most unopened, factory-sealed items.
Returns must be authorized before shipping back and must include all original packaging and accessories. Opened or used items are not returnable unless defective.
Some products—such as custom orders, special-order items, audio gear, software, and LED video walls—are non-returnable. Non-defective returns may be subject to a 20–30% restocking fee, and customers are responsible for return shipping costs.
For damaged or incorrect items, please contact us immediately.
From Scope to Sign-Off
A structured delivery process designed to reduce risk and keep projects moving.
Plan
Discovery, site review, requirements gathering, and project alignment. We define scope, constraints, and success criteria before any design work begins.
- Discovery calls & stakeholder interviews
- On-site survey & infrastructure review
- Requirements & use-case documentation
- Project scope, timeline & milestone alignment
Engineer
System design, schematics, signal flow, BOM development, and documentation. Every project leaves this phase with a complete engineering package.
- AV system design & signal flow diagrams
- Equipment selection & BOM development
- Rack layout & control system design
- As-built documentation package
Deploy
Procurement, logistics, installation, programming, commissioning, and training. We own the delivery from first shipment to final handoff.
- Authorized procurement & logistics coordination
- Physical installation & cable management
- Control system programming & configuration
- Commissioning, testing & end-user training
Support
Monitoring, maintenance, lifecycle planning, and long-term service agreements. We stay engaged long after project close.
- 24/7 remote system monitoring
- Preventive & reactive maintenance
- Technology lifecycle & refresh planning
- Long-term service level agreements
A decade of delivery — trusted by 275+ clients across industries
