358 Fence is a high-security welded mesh fencing system known for its narrow mesh opening and anti-climb design.
The name “358” comes from the traditional imperial dimensions of the mesh: approximately 3 inches by 0.5 inch with 8 gauge wire.
In metric terms, a common 358 mesh specification is approximately 76.2 × 12.7 mm with 4.0 mm wire.
Because the opening is very narrow, the mesh provides limited space for normal hand and foot holds. At the same time, the welded structure still allows visibility through the fence.
For this reason, 358 Fence is widely used for prisons, data centers, power facilities, industrial security zones, airports, military sites, government facilities, and other high-security projects.
Why Is It Called 358 Fence?
The name comes from the original mesh dimensions.
| Part of the Name | Meaning |
|---|---|
| 3 | Approximately 3 inches horizontal opening |
| 5 | Approximately 0.5 inch vertical opening |
| 8 | Traditional 8 gauge wire reference |
Today, international buyers often work with metric specifications instead of the original imperial description.
Therefore, it is better to confirm the actual mesh size and wire diameter on the drawing or quotation rather than relying only on the term “358 Fence.”
What Is the Standard 358 Fence Mesh Size?
A widely used 358 mesh opening is:
76.2 mm × 12.7 mm
The narrow 12.7 mm opening is the key feature that gives the fence its anti-climb character.
Compared with larger mesh fencing, the smaller opening reduces the space available for fingers, shoes, and common climbing movements.
However, buyers should still confirm the exact dimensions required by the project because panel design and security requirements can vary.
What Wire Diameter Is Used for 358 Fence?
A common wire diameter is 4.0 mm.
However, different projects may use other wire sizes depending on the required security level, panel dimensions, and structural design.
Wire diameter affects:
- Panel weight
- Rigidity
- Steel consumption
- Material cost
- Handling requirements
Therefore, buyers should always compare the actual wire diameter when reviewing quotations.
Why Is the Mesh So Narrow?
The narrow mesh is not only a visual feature. It serves a security function.
A smaller opening can help reduce conventional climbing opportunities because it offers less space for normal hand and foot placement.
In addition, the dense welded mesh can make it more difficult to insert larger tools through the fence compared with many general-purpose mesh systems.
At the same time, the open structure still supports:
- CCTV monitoring
- Security patrol visibility
- Lighting penetration
- Visual inspection of restricted areas
Is 358 Fence the Same as Anti-Climb Fence?
358 Fence is one of the most recognized anti-climb welded mesh systems.
However, “anti-climb fence” is a broader category.
Different high-security projects may use:
- 358 welded mesh
- Taller welded mesh systems
- Additional top security extensions
- Special security posts
- Project-specific gate systems
Therefore, buyers should match the fence system to the approved project requirement instead of assuming that one anti-climb design fits every site.
What Are the Main 358 Fence Specifications?
A complete 358 Fence specification includes much more than mesh opening.
| Specification | What Buyers Should Confirm |
|---|---|
| Mesh Opening | Commonly around 76.2 × 12.7 mm |
| Wire Diameter | Commonly around 4.0 mm, subject to project requirements |
| Panel Height | According to required security level |
| Panel Width | According to system and post spacing |
| Post Size | Section, wall thickness and length |
| Fixing System | Clamps, bars, plates or security fittings |
| Surface Treatment | Galvanized, powder coated or project-specific finish |
| Gates | Pedestrian and vehicle gate configuration |
What Fence Heights Are Available?
358 Fence can be manufactured in different heights according to the project.
For example, a commercial security perimeter may use a lower configuration, while a prison or critical infrastructure project may require a much taller barrier.
Increasing the fence height can also change:
- Post length
- Post strength
- Foundation requirements
- Gate height
- Number of fixing points
Therefore, fence height should always be considered together with the complete support system.
What Types of Posts Are Used?
Steel posts support the welded mesh panels and connect the perimeter into one system.
Depending on the project, the fence may use:
- Standard line posts
- Corner posts
- Terminal posts
- Gate posts
- Heavy-duty posts for taller fence sections
The correct post specification depends on fence height, panel weight, spacing, installation method, and site conditions.
For this reason, buyers should compare post wall thickness and length as well as outside dimensions.
How Are 358 Fence Panels Fixed to the Posts?
Different systems use different connection methods.
Common components can include:
- Steel clamps
- Fixing bars
- Security plates
- Anti-tamper bolts
- Security nuts
- Washers
- Post caps
The connection system is important because it affects both installation and perimeter security.
Therefore, project buyers should confirm that the panels, posts, and fence fittings are compatible before ordering.
What Surface Treatments Are Available?
358 Fence is designed for outdoor use, so corrosion protection is an important part of the specification.
Common options can include galvanized steel and galvanized steel with powder coating.
Powder coating can also provide a project-specific color, such as:
- Green
- Black
- Gray
- Other RAL colors
In addition, the surface finish should be coordinated across the main system, including panels, posts, gates, and visible fittings.
What Are the Main Advantages of 358 Fence?
358 Fence is used in high-security projects because it combines several useful features.
| Advantage | Why It Matters |
|---|---|
| Narrow Mesh | Reduces conventional hand and foot holds |
| Rigid Welded Structure | Creates a stable panel system |
| Visibility | Supports CCTV and security monitoring |
| Flexible Heights | Can be configured for different security levels |
| Gate Integration | Can match pedestrian and vehicle access points |
| Custom Finish | Can match project environment and color requirements |
Where Is 358 Fence Commonly Used?
358 Fence is often considered where the perimeter needs a higher level of security than a general-purpose fence.
Typical applications include:
- Prisons and correctional facilities
- Data centers
- Power substations
- Airports
- Military facilities
- Government sites
- Industrial security zones
- Critical infrastructure
358 Fence vs Standard Welded Mesh Fence
The main difference is the mesh geometry.
Standard welded mesh fences often use larger openings. As a result, they may be easier to climb depending on the design.
358 Fence uses a much narrower mesh opening.
Therefore, it is more commonly selected where anti-climb performance and higher perimeter security are important.
358 Fence vs Chain Link Fence
Chain Link Fence uses flexible woven mesh, while 358 Fence uses rigid welded panels.
Chain Link Fence can work well for long industrial or logistics boundaries where cost efficiency and flexible installation matter.
358 Fence is usually a stronger candidate when the project needs:
- Narrow anti-climb mesh
- Rigid welded panels
- Security-focused fittings
- Higher-security perimeter control
For this reason, the two systems often serve different project priorities.
What Should Buyers Check Before Ordering 358 Fence?
Before requesting a final quotation, confirm the main project details.
Useful information includes:
- Total perimeter length
- Required fence height
- Panel dimensions
- Wire diameter
- Mesh opening
- Post dimensions
- Post wall thickness
- Surface treatment
- Fence fitting requirements
- Pedestrian gate schedule
- Vehicle gate schedule
- Project drawings or BOQ
- Destination country or port
If some details are still under review, send the information you already have. The manufacturer can then prepare the quotation around the confirmed project scope.
Why Choose BDFENCE for 358 Fence?
Hebei Bendin Industrial Technology Co., Ltd. (BDFENCE) manufactures 358 Security Fence systems for international contractors, distributors, project buyers, and security-sensitive facilities.
Our supply can include:
- 358 welded mesh panels
- Steel posts
- Security fixing systems
- Anti-tamper fasteners
- Pedestrian gates
- Vehicle gates
- Installation accessories
In addition, buyers can send BOQ documents, fence drawings, gate schedules, and technical specifications for project review.
Final Answer: What Is a 358 Fence?
358 Fence is a high-security welded mesh system known for its narrow mesh opening, rigid panel construction, and anti-climb characteristics.
A common configuration uses approximately 76.2 × 12.7 mm mesh with 4.0 mm wire, although final specifications can vary by project.
The fence works best when buyers treat the panel, posts, gates, fittings, and surface treatment as one complete system.
Therefore, always confirm the actual project specification before comparing suppliers or prices.
Contact BDFENCE
Hebei Bendin Industrial Technology Co., Ltd. (BDFENCE)
Phone:
+86 18703182863
WhatsApp:
+86 18703287372
Email:
info@bd-fence.com
Website:
https://bd-fence.com/
FAQ
What does 358 mean in 358 Fence?
The name refers to the traditional imperial mesh description: approximately 3 inches by 0.5 inch with an 8 gauge wire reference. Today, buyers usually confirm the actual metric mesh size and wire diameter.
What is the mesh size of 358 Fence?
A common mesh opening is approximately 76.2 × 12.7 mm. However, final specifications should follow the approved project requirement.
What wire diameter is used for 358 Fence?
A common wire diameter is around 4.0 mm. Other specifications may also be available depending on the project design.
Why is 358 Fence difficult to climb?
The narrow mesh provides limited conventional space for hand and foot placement. Therefore, it offers better anti-climb characteristics than many larger-opening fence systems.
Can 358 Fence be 3m high?
Yes. Taller 358 Fence configurations can be manufactured for high-security projects. However, the post system, foundations, gates, and fixing points must match the increased height.
Can BDFENCE manufacture custom 358 Fence?
Yes. BDFENCE can customize panel dimensions, height, posts, surface finish, RAL color, security fittings, and gates according to project requirements.