4-Post Open Racks / WOS-990
9U 900mm Open Frame Rack
The tallest Claytek WOS 4-post open rack in this import: 9U × 900 mm, 440 lbs, 35" chassis class.
Product Overview
What the WOS-990 is built for.
WOS-990 is the 9U × 900 mm Claytek WOS 4-post open frame rack — 20.00" × 21.50" × 35.40" (508.0 × 546.1 × 899.2 mm). Supported chassis depth is 35" and under. Loading 440 lbs. Same WOS hardware as WOS-490/WOS-690 with the most RU in this WOS group. Compare with WOR-1511 if you need adjustable depth up to 43.3" instead of a fixed 900 mm frame.
Key Features
Engineered for reliability and integration.
- 9U 4-post open frame — 900 mm (35.40") deep
- Fits chassis 35" and under
- Overall size 20.00" W × 21.50" H × 35.40" D (508.0 × 546.1 × 899.2 mm)
- Tallest WOS here — 5 more RU than WOS-490
- Open-frame construction for airflow and quick access
- Ultra-lightweight with locking casters
- Compatible with HP/Dell/IBM sliding-rail servers
- M5 mounting screws and cage nuts included
- Cost-effective 19" open-frame solution
Specifications
Technical specifications.
| Model Number | WOS-990 |
|---|---|
| Product Category | 4-Post Open Rack |
| Brand | Claytek |
| Series | WOS — 4 Post Rack |
| Form Factor | 9U |
| Cabinet Depth | 900 mm (35.40") |
| Supported Chassis Depth | 35" and under |
| Loading Capacity | 440 lbs |
| Material | SPCC 2.0mm |
| Color | Black |
| Certification | RoHS compliant |
| Dimensions | 20.00" × 21.50" × 35.40" · 508.0 mm × 546.1 mm × 899.2 mm |
| Notes | Locking casters. HTS 8473.30.5100. |
Downloads
Documentation & drawings.
Applications
Where the WOS-990 is deployed.
9U Open 4-Post
Most RU in the WOS 900 mm group.
Lab / Colocation Utility
Open access, 440 lbs, locking casters.
Vs Adjustable WOR
Fixed 900 mm / 35" class; WOR-xx11 adjusts 27.56"–43.3".
Sliding-Rail Servers
HP/Dell/IBM sliding-rail compatible.
Customization Options
Adapt the WOS-990 to your program.
iStarUSA Design-In services cover mechanical, electrical, and lifecycle customization scopes.
Front Panel Customization
Mechanical Modification
Cooling Design
Branding / Labeling
Long Lifecycle Planning
Two Ways to Buy
Order the standard model — or use it as a platform.
The WOS-990 is available both as a ready-to-ship standard product and as a starting point for OEM/ODM customization. Pick the path that matches your project.
Option A
Use as Standard Product
Order the WOS-990 with its published specifications. Ideal when you need a proven configuration, immediate quotation, and comparable datasheets against other models.
- Published specifications and datasheets
- Standard configuration, ready to quote
- Compatible with existing integrations
Option B
Use as Customizable Platform
Start with the WOS-990 and adapt it for OEM/ODM, Design-In, mechanical modification, or long-term supply programs. Our engineering team supports the full customization scope.
- OEM/ODM branding and mechanical modification
- Design-In engineering support
- Long-lifecycle and BOM stability planning
Related Products
Explore adjacent options.
Design-In Center
Take WOS-990 into your next project.
Request a quotation on the standard SKU, or start a Design-In conversation around customization, lifecycle, and integration.