4U Rack Blanking Panel
4U blanking panel designed for standard 19-inch server racks and network cabinets.
- Manufactured from cold-rolled steel with a durable powder-coated finish
- Available in solid, ventilated, and perforated panel configurations
- Multiple mounting options available, including screw-mounted, hinged, and tool-less snap-in designs
- Supplied with M6 screws and cage nuts for compatibility with EIA-310 rack systems
- Custom dimensions, materials, colors, and logo printing available upon request
Product Details
| Parameter | Specification |
|---|---|
| Panel Height (4U) | 177.8 mm (7″) ±0.5 mm |
| Panel Width | 482.6 mm (19″) ±0.5 mm |
| Sheet Thickness | 1.0 mm / 1.2 mm / 1.5 mm / 2.0 mm before finishing |
| Panel Depth / Formed Flange Depth | Confirmed according to mounting method and design |
| Materials | Cold-rolled steel (SPCC) / Aluminum (5052/6061) / Stainless steel (304/316) |
| Standard Surface Finish | Degreasing → Pickling → Phosphating → Powder coating, 60–80 μm |
| Optional Surface Finishes | E-coat primer + powder coating / Anodizing for aluminum |
| Color Options | Black (RAL 9005), Gray (RAL 7035), custom RAL colors |
| Horizontal Mounting Hole Spacing | 465 mm in accordance with EIA-310; vertical spacing follows standard rack-unit positioning |
| Mounting Hole Types | Square holes for cage nuts / Tapped round holes / Custom |
| Included Hardware | M6 screws and M6 cage nuts; quantity depends on panel configuration |
| Compatible Rack Standards | EIA-310-D / EIA RS-310-C / EIA/ECA-310-E |
| Net Weight | Depends on material, thickness, and panel type |
| Packaging | Individual plastic bag + corrugated dividers + export-grade carton |
| Certifications | CE, RoHS, manufactured under an ISO 9001 quality management system |
| HS Code | 8538.90.00, subject to final classification by destination customs authorities |
| Country of Origin | China |
| MOQ | 100 pieces for standard configurations; custom projects quoted separately |
| Lead Time | 7–15 business days depending on configuration and quantity |
Fill Unused Rack Space, Manage Airflow, and Keep Cabinets Organized
Unused rack space affects more than just appearance.
Open U spaces allow hot exhaust air from operating equipment to recirculate toward the front air-intake side of the rack. This can raise the internal cabinet temperature and make it easier for dust to enter and accumulate on active equipment.
Blanking panels close unused rack spaces to reduce hot-air recirculation and help maintain controlled front-to-back airflow.
Blanking panels close these unused spaces and help maintain a more controlled rack environment.
Compared with the cost of reduced cooling efficiency and additional equipment maintenance, blanking panels are a simple and cost-effective solution.
This 4U blanking panel is suitable for:
- Standard 19-inch server racks
- Network cabinets
- Equipment enclosures
A single 4U panel covers 177.8 mm (7 inches) of unused vertical rack space.
Where Is This Blanking Panel Used?
Blanking panels can be installed wherever unused rack units are present in a standard 19-inch rack.
- Data Centers — Close unused spaces between servers to maintain consistent front-to-back airflow and reduce hot-air recirculation.
- Telecommunications Rooms — Help reduce dust entry into cabinets operating in continuously ventilated environments.
- Network Rooms and MDF / IDF Closets — In compact spaces, even a small number of open rack units can reduce cooling efficiency.
- AV and Broadcast Racks — Help minimize dust buildup and uncontrolled airflow around audio and video equipment.
- Industrial Control Cabinets — Help prevent dust and airborne particles from entering equipment racks in factory environments.
4U blanking panels are used in server racks, telecom cabinets, network rooms, AV systems, and industrial control enclosures.
Solid, Ventilated, or Perforated: Which Type Should You Choose?
The right panel design depends on how much airflow you want to allow through the unused rack space.
Solid, ventilated, and perforated panels provide different levels of airflow and dust protection for unused rack spaces.
| Panel Type | Airflow | Dust Protection | Best Suited For |
|---|---|---|---|
| Solid | Fully blocked | Highest | Enclosed racks where cooling air should pass only through active equipment |
| Ventilated | Partial airflow through slots | High | Racks where unused spaces still require limited natural convection |
| Perforated | Maximum airflow | Moderate | High-heat environments where ventilation is required across most of the panel surface |
For hot-aisle / cold-aisle containment systems, solid blanking panels are generally preferred because they help prevent hot exhaust air from bypassing equipment and returning to the cold aisle.
Solid blanking panels help prevent hot exhaust air from bypassing equipment and returning to the cold aisle.
For smaller telecommunications cabinets without dedicated cooling systems, ventilated panels can allow a limited amount of natural airflow through unused rack spaces.
Customization Available
Rack blanking panels can be customized in size, material, color, ventilation pattern, mounting design, and packaging.
We manufacture rack blanking panels according to your technical requirements.
Common customization options include:
- Custom Dimensions — Non-standard rack-unit heights, widths other than 19 inches, or special formed flange depths
- Custom Logos and Text — Company branding applied by screen printing or laser marking
- Custom Colors — Any specified RAL color in addition to standard black and gray
- Custom Hole Patterns — Perforation patterns, cable pass-through openings, or dedicated ventilation slot layouts
- Custom Materials and Thicknesses — Aluminum, stainless steel, or non-standard cold-rolled steel thicknesses
- OEM Packaging — Branded cartons, custom labels, and retail-ready packaging
Rack blanking panels are cut, formed, finished, and inspected through a controlled sheet metal manufacturing process.
Send us your drawings or specification requirements for review, and we can provide a quotation within 1–2 business days.
