Designed safer. Built tougher. Don't put your assets under a lightweight budget dome.
✓ OD76×2.5mm Heavy-Duty Steel Frame vs. Typical 1.8–2.0mm wall thickness
✓ 1.5m Tight Arch Spacing vs. Typical 2.0m spacing
✓ 5 Arches vs. Typical 4 arches. 25% more arches, more support, more protection.
Direct-from-manufacturer pricing — now available with limited Early-Bird launch savings.
RRP: $4,500.00 (Incl. GST)
Early-Bird Price: $4,100.00 (Incl. GST)
Incoming Stock: End-July 2026 — Pre-Order now and get an EXTRA 10% OFF!
Forklift or telehandler recommended for unloading. Depot pickup available.
A 12-metre wide container dome shelter isn't hard to find. What is hard to find is one built with 76 x 2.5mm heavy-wall steel and 1.5-metre arch spacing — instead of the 1.8mm or 2.0mm tubing and 2.0-metre spacing common in the market.
The TS1206(4m) gives you 72m² of column-free covered workspace across two 20ft containers, with a 4-metre peak height that clears larger machinery and tall-sided vehicles that a standard 3-metre dome simply won't fit.
Heavier steel. Tighter arch spacing. Seven longitudinal purlins for a stiffer, more rigid roof. And the same 10-year structural warranty backing it up.
What Makes the TS1206(4m) Different
✔ 890kg — The Weight That Tells the Story. Our TS1206(4m) ships at 890kg. Comparable 12-metre domes from budget suppliers come in at around 700-750kg. That missing 100kg+ isn't packaging — it's the steel that should have been there protecting your assets.
✔ 76 x 2.5mm Heavy-Wall Steel Throughout. Every arch is 76mm OD x 2.5mm wall thickness, hot-dip galvanised. At 12 metres wide, the physics of wind leverage are demanding — so we don't downgrade the steel. Competitors use 1.8mm or 2.0mm. We don't.
✔ Tighter 1.5m Arch Spacing. 5 arch sets at 1.5-metre centres — tighter than most comparable shelters at this width. Better load distribution, less flex in the roof, stronger frame overall.
✔ Diagonal Bracing on End Bays. 12 of 40 x 1.5mm diagonal braces on the first and last arch bays resist racking forces — the sideways movement that puts the most stress on a wide-span structure in high winds.
✔ Universal Base Rail + Lock-Clamps. Bolt-on, no-weld mounting to your 20ft containers. No drilling, no permanent modification. The shelter goes on clean and comes off clean.
✔ Grade 8.8 High-Tensile Bolts. Every bolt is Grade 8.8 — double the tensile strength of the Grade 4.8 standard used by most suppliers. Here's why that matters.
✔ 610gsm UV-Rated PVC Cover. Heavy-duty, fire-retardant, 100% waterproof. Tensioned and secured with 40 x 1.2mm cover clamp tubes along the full length.
Model | TS1206(4m) |
Floor Area | 72 m² |
Dimensions | 12.0m (W) x 6.0m (L) x 4.0m (H) |
Frame | 76mm x 2.5mm Hot-Dip Galvanised Steel |
Arch Sets | 5 arches at 1.5m centres |
Longitudinal Purlins | 7 of 60mm x 1.5mm |
Diagonal Bracing | 12 of 40mm x 1.5mm (end bays) |
Cover | 610 g/m² White PVC (UV & Fire Resistant) |
Corner Locking | 4 x locking heads (corner casting mount) |
Hardware | Grade 8.8 High-Tensile Bolts throughout |
Suitability | Designed for 20ft Containers (GP & High Cube) |
Mounting | Signature No-Weld Lock-Clamp System |
End Walls | Not included (open ends) |
Package Size | 265 x 110 x 80cm (890kg) — competitors: ~750kg |
● White — In stock (best for heat reflection and UV resistance)
● Silver Grey — Available by pre-order
● Olive Green — Available by pre-order
White is stocked as standard due to its superior performance in Australian conditions.
The TS1206(4m) is supplied open-ended as standard. Add end walls or doors to fully enclose your shelter:
● Half Panel End Wall — Top half enclosed, bottom half open for forklift and ground-level access
● Full End Wall or Winch door End Wall — Solid fully enclosed end, OR Winch door end wall for Drive-through access.
The 3m high dome covers most general storage. If you're asking about the 4m version, you probably already know why — something on your site won't fit under a standard 3m roof.
Here's where the TS1206(4m) earns its keep:
Trucks & Tipper Vehicles Most tippers, rigid trucks, and cab-overs sit between 3.5m and 4m at the roofline. The 4m peak gives you the clearance to drive in, work underneath, and walk around without ducking.
Caravans & Motorhomes Full-size motorhomes and fifth-wheelers regularly push past 3.5m. The 4m dome is the clean solution for long-term undercover storage without cramming.
Agricultural Machinery Headers, self-propelled sprayers, and large tractors with cabs are tall. Keep your most expensive gear out of the weather year-round without squeezing under a low roof.
Heavy Equipment Excavators, telehandlers, and elevated work platforms need room — not just for the machine, but for safe access during maintenance. The extra metre makes the difference between a proper workshop setup and a compromise.
Workshop & Maintenance Space When you're working under a truck or standing on top of a machine, 3m disappears fast. The 4m version gives you a workspace that actually works.
A 12-metre wide, 4-metre tall dome is a serious structure. The longer and taller the arch, the greater the bending moment at every connection point under wind load — and the more the frame has to work to stay rigid.
Budget suppliers building at this width will often stay on 1.8/2.0mm tube to keep costs down. The frame looks the same from outside — same 76mm outer diameter — but the wall is thinner, the section modulus is lower, and the resistance to bending drops significantly.
We don't stop at the steel spec. Our 5 arch sets are spaced at 1.5-metre centres — tighter than the 2.0-metre spacing most competitors use at this width. More arches across the same span means better load distribution, less unsupported distance between connection points, and a roof that stays stiff rather than flexing under gusting conditions.
At 12 metres wide and 4 metres tall, there's no margin to cut corners. The steel and the spacing both need to be right.
☛ Why 76x2.5mm Steel Outperforms 1.8mm — Full Technical Breakdown →
✔ AS/NZS 1170.2:2021 Certified — Engineered to Australian wind load standards across Wind Region A.
✔ No-Weld Lock-Clamp Assembly — The entire frame assembles with bolts and clamps. No welding, no trade licence required. Two free spanner kits included.
✔ 10-Year Structural Warranty — Backed by our Melbourne team, not an overseas email address.
✔ 10-Year Pro-Rata PVC Cover Warranty
A budget 12-metre dome might save you $500–$800 upfront. But if it fails during a storm — and at 12 metres wide with thin steel, the risk is real — you're not just replacing a shelter. You're looking at damaged machinery, interrupted operations, and a site safety incident that could have been avoided.
The TS1206(4m) is an asset. A cheap dome is an expense waiting to happen.
● Forklift Required — At 890kg, a minimum 2.5-tonne capacity forklift is required for unloading. Please have one on site before delivery arrives.
● No Forklift? — Let us know before dispatch and we'll coordinate alternatives.
● Melbourne Depot Pickup — Self-collection available. Free forklift loading provided.
● DIY-Friendly Kit — No-weld Lock-Clamp assembly. No specialist trades required. Two free spanner kits included.
● Professional Installation Available — Optional on-site service within Victoria.
☛ Australia-Wide Delivery → ※ Victoria Local Support & Installation →
Q: Why choose the TS1206(4m) instead of the standard 3m version? A: The 3m version suits most general storage needs. The 4m version is for sites where height is the limiting factor — trucks, tippers, caravans, motorhomes, agricultural headers, telehandlers, and excavators that simply won't clear a 3-metre opening. If your machinery or vehicles are tall, the 4m model is the straightforward choice. Same 12-metre width, same steel spec, same footprint — just a full metre more clearance at the peak.
Q: Why does the TS1206(4m) have 7 purlins instead of 5? A: A taller arch profile presents more surface area to wind load. The two additional purlins — 7 groups of 60 x 1.5mm vs 5 on the 3m version — increase the number of longitudinal connection points across the span, keeping the roof stiffer and the PVC cover properly tensioned under load.
Q: Does the TS1206(4m) fit 20ft High Cube containers? A: Yes. The TS1206(4m) is compatible with both standard 20ft GP and High Cube containers.
Q: Why does the TS1206(4m) weigh 890kg when competitors offer similar shelters at around 700kg? A: The difference is in the steel. Our 76 x 2.5mm tube carries substantially more steel per metre than the 1.8mm alternatives most competitors use. Across five full arches on a 12-metre wide, 4-metre tall structure — plus two extra purlins — that adds up to 190kg of additional steel that's actively working to protect your assets.
Q: Is the 610gsm PVC cover fire-retardant? A: Yes. Every TS1206(4m) ships with a heavy-duty 610 g/m² UV-treated white PVC cover that is fire-retardant and 100% waterproof.
Q: Are end walls available for the TS1206(4m)? A: The TS1206(4m) ships open-ended. End walls and roller doors are available as optional extras — see our End Walls & Doors range.
Q: Is professional installation available for the TS1206(4m) in Victoria? A: Yes. Professional on-site installation is available as an optional extra within Victoria. Contact us with your site location for a full delivered and installed price.
Q: What forklift capacity is needed to unload the TS1206(4m)? A: A minimum 2.5-tonne capacity forklift is required. The package ships at 890kg in a 265 x 110 x 80cm steel crate with integrated fork pockets.
Get a Quote on the TS1206(4m)
☏ 0493 310 211 ＠ info@toughcover.com.au
Melbourne warehouse stock. Australia-wide delivery. Professional installation available in Victoria.
