Choosing a crimped top fence isn’t just about looks — it’s a safety, compliance, and long-term cost decision. POLYMETAL Security Fence — Crimp top fence Black Fence Panels (2100mm x 2400mm) — are engineered to avoid the traps and hidden costs of cheaper panels, especially for pool fencing and government projects. For trusted local supply and installation, check Garrison Fencing Wangara. Below are 9 critical facts (truths, risks, pitfalls and benefits) you must understand before you lock in your next order.
1. Truth: 2100mm x 2400mm Panels Give You Serious Security Coverage
- Core product: Security Fence, Crimp top fence, Black Fence Panels – 2100mm x 2400mm.
- Standard panel: 2400mm long x 2100mm high – ideal for perimeter and high-security applications.
- Flexible height range: also available in 1800mm, 1500mm and 1200mm heights (ask for prices).
Simply put: too-low steel panels mean more risk and potential claims. POLYMETAL’s height options let you match protection to the area — perimeter, driveway, pool, school or government site. For traffic control solutions you might pair with fencing, see traffic road barriers
2. Risk: Weak Rails and Low-Strength Steel Are a Hidden Hazard
POLYMETAL uses:
- 40x40x1.6mm top and bottom rails
- 25x25x1.2mm verticals
- Steel yield strength: 350MPa
Low-grade rails and mild steel introduce a risk and weakness: your fence can bend, deform or fail under pressure or impact. 350MPa structural steel massively reduces this hazard, giving your site a crucial safety edge.
3. Danger: Only 17 Pickets Is a Dangerous Flaw for Pool Fences
POLYMETAL panels are built with:
- 19 vertical pickets per 2400mm panel
- Not the 17 cheap pickets many others supply
That extra density is not a small detail; it is a major safety feature. Fewer pickets create:
- A gap in protection
- A threat to children and pets
- A potential compliance failure for pool fencing
With 19 uprights, POLYMETAL panels comply with pool fence requirements, reducing the danger of accidents and the legal cost of failing inspections.
4. Pitfall: Oversized Gaps (120mm) Can Fail Inspections and Create Loss
Gap between tubes:
- POLYMETAL: 90mm spacing between vertical tubes
- “Budget” panels: often 120mm gap
A 120mm gap is a classic pitfall and loophole:
- Easier foothold for climbing
- Higher chance of a child squeezing through
- Increased inspection failure risk
The 90mm spacing is a deliberate design rule to minimise this hazard and give you a compliance advantage.
5. Benefit: 80–105µm Powder Coating vs 30µm Budget Coatings
Coating details:
- POLYMETAL: >80µm powder coating, up to 105µm
- Cheap panels: around 30µm only
Thin coatings are a hidden defect and waste:
- Faster UV fade
- Early rust and coating breakdown
- More frequent repaints and replacement cost
A thicker 80–105µm layer delivers a powerful benefit: longer life, better colour retention and lower maintenance, boosting your long-term payoff and profit from each installed fence line.
6. Insight: Phosphate Treatment + Powder Coating Extends Service Life
Surface preparation:
- Panels are phosphate treated first
- Then powder coated
Skipping chemical pretreatment is a serious oversight many low-cost suppliers make. It creates a flaw in corrosion protection and can turn into:
- Coating failure
- Rust damage from the inside out
- Warranty problems
The phosphate + powder system is a key principle behind the extended coating life, giving you a technical advantage and robust long-term protection.
7. Warning: Posts, Brackets and Caps Are Often the Weakest Link
OTHER IMPORTANT ITEMS from POLYMETAL:
- 65x65x2mm posts @ 2.7m length
- 65x65x2mm posts @ 3.0m length
- Security universal brackets – all screws from the inside, no left or right orientation
- Steel powder-coated cap 65×65 (not cheap plastic caps)
- Painted self-drilling screws
Many fences fail at the post and bracket level, not at the panel. Using light posts, plastic caps and exposed external screws creates:
- Structural weakness
- Water entry gaps leading to rust
- Vandalism opportunities and hardware theft
POLYMETAL’s configuration removes these bugs and errors by:
- Locking hardware from the inside
- Using structural steel posts and steel caps
- Keeping the appearance sharp with painted screws
Ignoring this warning is how projects suffer long-term loss, damage and reputation crisis.
8. Advantage: Palletised Delivery Reduces On-Site Damage and Waste
Packaging:
- 35 panels per steel-framed pallet, wrapped in plastic sheets
Loose, unprotected delivery is a trap that causes:
- Scratched coatings
- Bent pickets
- On-site waste and unexpected cost
The steel-framed pallet system gives you a clear logistics advantage:
- Cleaner unloading
- Safer storage
- Less rework and fewer rejected panels
This is a practical gain that turns directly into time and labour reward for installers.
9. View: Satin Black as Standard, Custom Colours for Design Leverage
Finish:
- Standard finish: Satin Black
- Colour change available with extra powder-coating charges if required
Black is a timeless design choice for modern homes, schools and government projects, but some sites demand brand or architectural colours. POLYMETAL gives you:
- A clean Satin Black profile out of the box
- The option to match corporate or architectural colour schemes
This flexibility is a real edge and boost for specifiers and designers who want both performance and visual impact from a crimped top fence system.
Specification Tables – POLYMETAL Crimped Top Fence Panels
Table 1 – 1200mm High Crimped Top Fence Panels
| Spec No. | Fence Height (mm) | Fence Width (mm) | Rail Frame (mm) | Upright (mm) | Upright Spacing (mm) | Post Height (mm) | Post Size (mm) |
|---|---|---|---|---|---|---|---|
| 1 | 1200 | 2400 | 40×40 | 16×16 | 100 | 1800 | 60×60 |
| 2 | 1200 | 2400 | 40×40 | 16×16 | 100 | 2100 | 65×65 |
| 3 | 1200 | 2400 | 40×40 | 25×25 | 100 | 1800 | 65×65 |
| 4 | 1200 | 2400 | 40×40 | 25×25 | 100 | 2100 | 75×75 |
| 5 | 1200 | 2400 | 45×45 | 16×16 | 100 | 1800 | 75×75 |
| 6 | 1200 | 2400 | 45×45 | 16×16 | 100 | 2100 | 80×80 |
| 7 | 1200 | 2400 | 45×45 | 25×25 | 100 | 2100 | 65×65 |
| 8 | 1200 | 2400 | 45×45 | 25×25 | 100 | 2400 | 80×80 |
| 9 | 1200 | 2400 | 50×50 | 16×16 | 100 | 2100 | 100×100 |
| 10 | 1200 | 2400 | 50×50 | 25×25 | 100 | 2400 | 100×100 |
Table 2 – 1500mm High Crimped Top Fence Panels
| Spec No. | Fence Height (mm) | Fence Width (mm) | Rail Frame (mm) | Upright (mm) | Upright Spacing (mm) | Post Height (mm) | Post Size (mm) |
|---|---|---|---|---|---|---|---|
| 1 | 1500 | 2400 | 40×40 | 16×16 | 100 | 2100 | 60×60 |
| 2 | 1500 | 2400 | 40×40 | 25×25 | 100 | 2100 | 65×65 |
| 3 | 1500 | 2400 | 40×40 | 25×25 | 100 | 2400 | 75×75 |
| 4 | 1500 | 2400 | 45×45 | 16×16 | 100 | 2100 | 75×75 |
| 5 | 1500 | 2400 | 45×45 | 25×25 | 100 | 2400 | 80×80 |
| 6 | 1500 | 2400 | 45×45 | 30×30 | 100 | 2400 | 65×65 |
| 7 | 1500 | 2400 | 50×50 | 16×16 | 100 | 2400 | 80×80 |
| 8 | 1500 | 2400 | 50×50 | 25×25 | 100 | 2700 | 80×80 |
| 9 | 1500 | 2400 | 50×50 | 30×30 | 100 | 2700 | 100×100 |
| 10 | 1500 | 2400 | 45×45 | 30×30 | 100 | 2700 | 100×100 |
Table 3 – 1800mm High Crimped Top Fence Panels
| Spec No. | Fence Height (mm) | Fence Width (mm) | Rail Frame (mm) | Upright (mm) | Upright Spacing (mm) | Post Height (mm) | Post Size (mm) |
|---|---|---|---|---|---|---|---|
| 1 | 1800 | 2400 | 40×40 | 25×25 | 100 | 2400 | 65×65 |
| 2 | 1800 | 2400 | 40×40 | 25×25 | 100 | 2700 | 75×75 |
| 3 | 1800 | 2400 | 40×40 | 30×30 | 100 | 2700 | 80×80 |
| 4 | 1800 | 2400 | 45×45 | 25×25 | 100 | 2400 | 75×75 |
| 5 | 1800 | 2400 | 45×45 | 25×25 | 100 | 2700 | 80×80 |
| 6 | 1800 | 2400 | 45×45 | 30×30 | 100 | 3000 | 80×80 |
| 7 | 1800 | 2400 | 50×50 | 25×25 | 100 | 2700 | 100×100 |
| 8 | 1800 | 2400 | 50×50 | 30×30 | 100 | 3000 | 100×100 |
| 9 | 1800 | 2400 | 50×50 | 30×30 | 100 | 3200 | 80×80 |
| 10 | 1800 | 2400 | 45×45 | 30×30 | 100 | 3200 | 100×100 |
Table 4 – 2100mm High Crimped Top Fence Panels
| Spec No. | Fence Height (mm) | Fence Width (mm) | Rail Frame (mm) | Upright (mm) | Upright Spacing (mm) | Post Height (mm) | Post Size (mm) |
|---|---|---|---|---|---|---|---|
| 1 | 2100 | 2400 | 40×40 | 25×25 | 100 | 2700 | 65×65 |
| 2 | 2100 | 2400 | 40×40 | 25×25 | 100 | 3000 | 75×75 |
| 3 | 2100 | 2400 | 40×40 | 30×30 | 100 | 3000 | 80×80 |
| 4 | 2100 | 2400 | 45×45 | 25×25 | 100 | 3000 | 80×80 |
| 5 | 2100 | 2400 | 45×45 | 30×30 | 100 | 3200 | 80×80 |
| 6 | 2100 | 2400 | 45×45 | 30×30 | 100 | 3600 | 100×100 |
| 7 | 2100 | 2400 | 50×50 | 25×25 | 100 | 3200 | 100×100 |
| 8 | 2100 | 2400 | 50×50 | 30×30 | 100 | 3600 | 100×100 |
| 9 | 2100 | 2400 | 50×50 | 30×30 | 100 | 4000 | 80×80 |
| 10 | 2100 | 2400 | 50×50 | 30×30 | 100 | 4200 | 100×100 |
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