20FT Expandable Container House 37sqm Dual Wing Steel Frame Prefab Home and Site Office
The 20FT expandable container house is the entry point to the expandable range that punches well above its transport footprint. Folded to 5,900 × 2,200 × 2,480mm for road and sea delivery, the unit opens on site through a dual wing bilateral expansion to reveal a 37 m² enclosed floor area — fully enclosed, weatherproofed, and ready for interior fitout connection within 60 minutes of arrival. The Q345B hot-dip galvanized steel frame uses welded primary corner nodes and bolted secondary beam connections, giving the unit the structural rigidity of a permanent building with the portability of a standard container. Two workers handle the complete expansion sequence using manual locking pins with no crane, no concrete, and no specialist trades required on site.
The 20FT size fits two units per 40HQ shipping container, making it the most logistics-efficient model in the expandable range for international buyers who need to move multiple units per shipment. It is the preferred choice for single-occupant accommodation, two-person site offices, small retail kiosks, or any application where a compact but fully enclosed structure is needed at low per-unit freight cost.
- 37 m² expanded floor area from a folded unit just 2,200mm wide — ships two per 40HQ
- Dual wing bilateral expansion with manual locking pins, no crane needed on site
- Q345B hot-dip galvanized steel frame with welded corner nodes and bolted secondary joints
- 100mm EPS or 150mm rock wool insulated sandwich panel wall options
- 1.2mm TPO waterproof membrane bonded over insulated roof panel
- Aluminum alloy double-glazed sliding windows with powder-coat finish and mosquito screens
- 50mm insulated steel security door factory pre-hung with multi-point latch system
- 18mm moisture-proof plywood subfloor with 3mm SPC vinyl plank finish, 260 kg/m² rated
- Pre-routed 220V electrical conduit with distribution board, LED fixtures, and wall sockets
- PPR and PVC plumbing stub network to bathroom and kitchen connection points
- Adjustable leveling foot pads accommodate ground grade variation up to 100mm
- Exterior color, panel type, and interior layout fully customizable per order
| Product Type | 20FT Dual Wing Expandable Container House |
|---|---|
| Expanded Exterior Dimensions | 5,900 mm (L) × 6,300 mm (W) × 2,480 mm (H) |
| Internal Dimensions (Expanded) | 5,460 mm (L) × 6,140 mm (W) × 2,240 mm (H) |
| Folded Transport Dimensions | 5,900 mm (L) × 2,200 mm (W) × 2,480 mm (H) |
| Expanded Floor Area | 37 m² |
| Expansion System | Dual wing bilateral fold-out with manual locking pins |
| Main Frame | Q345B hot-dip galvanized steel, welded primary nodes, bolted secondary connections |
| Wall Panel Options | EPS 100mm / Rock wool 150mm / PU 75mm insulated sandwich panel |
| Roof Panel | 100mm EPS sandwich panel with 1.2mm TPO waterproof membrane overlay |
| Floor System | 18mm moisture-proof plywood + 3mm SPC vinyl plank, 260 kg/m² rated |
| Windows | Aluminum alloy sliding, 5+9A+5mm double glazed, powder-coat frame, mosquito screen |
| Entry Door | 50mm insulated steel, multi-point latch, factory pre-hung frame |
| Electrical System | 220V / 50Hz pre-routed PVC conduit, 1× distribution board, 5× sockets, 4× LED fixtures |
| Plumbing System | PPR hot/cold supply lines + PVC drain stub-outs to bathroom and kitchen positions |
| Wind Load Rating | Level 10 (≤ 28.4 m/s sustained) |
| Snow Load Capacity | 0.5 kN/m² |
| Net Weight | 3.12 tons |
| Units per 40HQ Container | 2 units (folded transport state) |
| On-Site Deployment Time | 45–60 minutes (2-person crew, no crane required) |
| Design Service Life | ≥ 20 years under standard use conditions |
| Customization | Panel type, interior layout, wall color, window count, bathroom and kitchen fitout, OEM/ODM |
- Single-occupant workforce accommodation for remote construction, mining, and energy project staff
- Two-desk project site office with filing storage and equipment space for small supervision teams
- Guard booth and security checkpoint at industrial park and infrastructure project entrances
- Glamping cabin and eco-lodge unit for resort operators requiring low-footprint guest accommodation
- Mobile retail kiosk and pop-up store for brands needing relocatable commercial space
- Emergency first-aid and medical screening station for field healthcare and disaster response programs
- Agricultural site office and equipment storage room for farm and plantation management operations
- Volume residential supply for developers and NGOs requiring high unit count per shipping container
The 20FT delivers 37 m² at 3.12 tons and ships two units per 40HQ container — the most freight-efficient model in the range. The 30FT provides 56 m² (one per 40HQ) and suits projects needing a full one-bedroom residential layout. The 40FT provides 73 m² for larger office or multi-bed dormitory requirements. Choose the 20FT when per-unit shipping cost, site access width, or single-occupant space requirements are the primary procurement criteria.
The unit requires only a compacted flat surface, pre-cast concrete pads, or adjustable steel leveling foot pads — no concrete slab or foundation excavation is required. The built-in foot pad system accommodates up to 100mm of ground grade variation. For permanent placements, a simple gravel bed or interlocking paving block base is sufficient and can be completed in under half a day.
Yes. Units can be positioned side by side with end walls aligned and connected through a cut-through doorway opening or a covered corridor module. A pair of connected 20FT units provides approximately 74 m² of combined enclosed space — comparable to the 40FT footprint — at the same per-unit sea freight cost and with greater layout flexibility across two separate structural boxes.
For tropical and high-humidity environments, 100mm EPS panels with a color-coated steel exterior skin provide adequate thermal resistance and are inherently moisture-resistant. Rock wool panels are the superior option where both heat resistance and acoustic separation are needed, but require careful installation detailing at panel joints to prevent moisture ingress in sustained high-humidity conditions. Both options are supplied with sealed joint tape as standard.
Please provide destination port, total unit quantity, wall panel type preference (EPS, rock wool, or PU), electrical voltage standard (110V or 220V), interior layout requirement, and any optional module needs such as bathroom fitout, kitchen unit, air conditioning bracket, or furniture package. A full FOB price breakdown per unit and for the total order will be returned within 24 hours.
| Specification | 700 Mini | 10FT | 20FT | 30FT | 40FT |
|---|---|---|---|---|---|
| Expanded Dimensions (mm) | 5900×4800×2480 | 2950×6300×2480 | 5900×6300×2480 | 9000×6220×2480 | 11800×6220×2480 |
| Internal Dimensions (mm) | 5460×4640×2240 | 2510×6140×2240 | 5460×6140×2240 | 8540×6060×2240 | 11540×6060×2240 |
| Folded Size (mm) | 5900×700×2480 | 2950×2200×2480 | 5900×2200×2480 | 9000×2200×2480 | 11800×2200×2480 |
| Expanded Floor Area (m²) | 27.5 | 18.5 | 37 | 56 | 73 |
| Net Weight (T) | 2.1 | 1.65 | 3.12 | 4.25 | 5.3 |
| Units per 40HQ | 6 | 4 | 2 | 1 | 1 |
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