Description
The Eaton Tripp Lite SmartRack SR42UBEXPNDNR3 is a 42U standard-depth, 4-post premium open frame rack designed to optimize data center airflow and accessibility. Built for maximum flexibility, this expansion model omits side panels, doors, and a top cover, making it ideal for network applications requiring open access and rapid configuration. It supports up to 3500 lbs (1588 kg) of equipment, features toolless mounting rails, and includes 50 M6 cage nuts and screws. Casters and levelers are pre-installed for easy placement and stability.
Whether you're managing servers, switches, or PDUs, this rugged, pre-assembled rack delivers superior reliability and adaptability for enterprise IT environments.
| Specification | Details |
|---|---|
| Model Number | SR42UBEXPNDNR3 |
| Rack Type | 4-Post Premium Open Frame Rack |
| Rack Height | 42U |
| Rack Depth | Standard |
| Maximum Device Depth | 37 in. (94 cm) |
| Minimum Device Depth | 4 in. (10.16 cm) |
| Weight Capacity (Stationary) | 3500 lbs (1588 kg) |
| Weight Capacity (Rolling) | 2250 lbs (1021 kg) |
| Color | Black |
| Casters | Pre-installed 3 in. casters |
| Levelers | Included and adjustable |
| Mounting Hardware | (50) M6 screws, (50) M6 cage nuts |
| Cable Management | Toolless vertical accessory mounting rails |
| Material Finish | Black textured powder coat |
| Grounding | Threaded front/rear grounding points |
| Compliance | UL 60950-1, IEC 60297-3, EIA/ECA-310-E, RoHS |
| Certifications | UKCA, UL, IEC |
| Warranty | 5-year limited warranty |
| Shipping Dimensions (H x W x D) | 79 x 24.5 x 40 in. (200.66 x 62.23 x 101.6 cm) |
| Shipping Weight | 200 lbs (90.72 kg) |
| Unit Dimensions (H x W x D) | 78.5 x 23.63 x 43 in. (201.93 x 60.02 x 105.41 cm) |
| Unit Weight | 150 lbs (68.04 kg) |
| Included Accessories | Owner’s Manual, Mounting Hardware |
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
