Description
The Eaton Tripp Lite SR42BMDEXPNDNR3 is a 42U SmartRack premium open-frame rack designed for scalable, high-capacity IT infrastructure. With a mid-depth 36" frame and no sides, doors, or roof, this expansion model is ideal for data centers seeking flexibility, airflow, and simplified cable management.
Pre-installed casters and leveling feet provide easy mobility and stable placement, while the rack’s tool-less button-mount rail system supports PDUs and vertical cable managers. It features adjustable square-hole vertical rails, supports up to 3,500 lbs of equipment, and includes mounting hardware for rapid deployment. Perfect for high-density networking, UPS, and patch panel setups.
| Specification | Details |
|---|---|
| Model Number | SR42BMDEXPNDNR3 |
| Rack Height | 42U |
| Rack Type | Open-Frame (Expansion Model) |
| Rack Depth | Mid (36 in / 927 mm) |
| Mounting Rail Depth Range | 4 to 28.75 in (102 mm to 730 mm) |
| Mounting Rail Holes | Square holes (adjustable in 1/4" increments) |
| Internal Depth (Max) | 31 in (787 mm) |
| Vertical Mounting Rails | 4 |
| Weight Capacity (Stationary) | 3,500 lbs (1588 kg) |
| Weight Capacity (Rolling) | 2,250 lbs (1021 kg) |
| Unit Dimensions (HxWxD) | 79.5 x 23.63 x 36 in (201.93 x 60.02 x 91.44 cm) |
| Shipping Dimensions (HxWxD) | 85 x 26 x 37.8 in (215.9 x 66.04 x 96.01 cm) |
| Unit Weight | 94 lbs (42.64 kg) |
| Shipping Weight | 130 lbs (58.97 kg) |
| Color | Black |
| Casters / Leveling Feet | Pre-installed 3” casters, removable levelers |
| Grounding | Front/rear threaded grounding points |
| Certifications | UL 60950-1, CE, RoHS, UKCA |
| Warranty | 5-year limited warranty |
| Included Accessories | 50 M6 screws, 50 M6 cage nuts, Owner’s Manual |
| UPC Code | 037332175687 |
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
