PreFabbed Tunnel Posts
New in stock — sliding gate hardware
Pre-Fabbed 100x100mm Welded Tunnel Post: No Onsite Fabrication, Perfect Alignment Every Time
If you've ever built a sliding gate tunnel post onsite, you know the drill: measuring, cutting, welding, grinding, touch-up painting — and hoping the tunnel bridge lines up straight when the gate finally rolls through.If you've ever built a sliding gate tunnel post onsite, you know the drill: measuring, cutting, welding, grinding, touch-up painting
Why installers are switching to pre-welded tunnel posts
No onsite fabrication. The tunnel bridge is pre-welded with a 250mm internal gap, so alignment is spot-on straight out of the box. What used to take hours of fabrication now takes minutes of installation.
Built for security applications. The post is made from 100x100mm SHS with a 3mm wall thickness and features 4 full edge welds, engineered for high-security sliding gate systems.
Made for Australian conditions. Hot-dip galvanised steel with a satin black powder coat finish delivers maximum corrosion resistance — coastal sites, western sun, it handles it all.
The right length for most jobs. At 3000mm long, it suits the majority of commercial and residential sliding gate applications.
Specifications at a glance
| Dimensions | 450mm wide × 3000mm tall, 100mm side depth, 250mm internal gap, 100mm base foot each side |
|---|---|
| Construction | 100×100×3mm galvanised SHS steel, 4 full edge welds, pre-fabricated |
| Finish | Satin Black [BLK] powder coat over hot-dip galvanised steel |
| SKU | TUN100250BLK |
In stock and ready to ship
The TUN100250BLK is in stock now, with nationwide delivery or Click & Collect from our Chipping Norton NSW warehouse.
Shop the 100x100mm Welded Tunnel Post →
Pairs well with
- Security Sliding Gate Kit – 100SQ Dual Tunnel Bridge, Heavy Duty Rollers & Catcher System
- 100x100mm Steel Post – Satin Black (3000mm)
- Security Sliding Gate Kit – 75SQ Dual Tunnel Bridge
Need bulk pricing or a custom quote?
Our team can help with commercial orders and volume pricing. Call 02 9755 2666 or email sales@fencingcomponents.com.au, or contact us online.