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- Products
- Expandable House
- Flat Roof Expandable House
- Space Capsule
- Container House
- Outdoor Kitchen
- Apple Cabin
- Mobile Toilet
- Mobile Stage
- About PreFab
- Products
- Expandable House
- Flat Roof Expandable House
- Space Capsule
- Container House
- Outdoor Kitchen
- Apple Cabin
- Mobile Toilet
- Mobile Stage
- About PreFab
- …
- Products
- Expandable House
- Flat Roof Expandable House
- Space Capsule
- Container House
- Outdoor Kitchen
- Apple Cabin
- Mobile Toilet
- Mobile Stage
- About PreFab
Astra S20 — The Logistics-Optimized 20ft Expandable Home
Tripled Shipping Efficiency with an Ultra-Slim 720mm Folded Profile
- Logistics Revolution: Folds to a record-breaking 720mm width, allowing up to 6 units to be shipped in a single 40HQ container (vs. 2 standard units).
- 27.5㎡ Instant Living: Expands into a full-scale residential space with dedicated kitchen, bathroom, and living areas.
- High-Precision Engineering: Features 130mm heavy-duty galvanized embedded hinges for seamless, multi-cycle folding and long-term durability.
- Commercial-Grade Insulation: 65mm EPS composite wall panels (A2 Fire Class) provide superior thermal performance in extreme climates.
- Starting from $5,000 USD
Why Choose the Astra S20 Ultra-Slim 20ft Expandable House
The Global Project Favorite
Specifically engineered for large-scale international projects where shipping costs are a critical factor.
Rugged & Reliable
Hot-galvanized steel frame with electrostatic powder coating ensures resistance to rust and corrosion in coastal or humid environments.
Smart Compact Design
Every millimeter of the 720mm folded state is optimized for safe stacking and rapid transport without the need for specialized oversized trailers.
Technical Specifications
Customizations for local building codes and extreme climates are available upon request.
Dimensions & Space
- External Dimensions (Open): 5900mm (L) x 4800mm (W) x 2480mm (H)
- External Dimensions (Folded): 5900mm (L) x 720mm (W) x 2480mm (H)
- Internal Dimensions: 5460mm (L) x 4640mm (W) x 2240mm (H)
- Total Area: 27.5 ㎡
Structure & Material
- Main Frame: High-strength Hot-galvanized steel with electrostatic spraying (Straight White).
- Wall Panels: 65mm EPS color steel composite panels (Double-sided 0.3mm steel).
- Roof (Wings): 65mm EPS composite board + 0.45mm corrugated steel veneer.
- Flooring: 18mm Bamboo glue board base with 4mm premium SPC stone plastic finish.
Openings & Hardware
- Main Door: Steel fire-rated security door with smart fingerprint lock options.
- Windows: Aluminum alloy double-glass sliding windows for superior sound/heat insulation.
- Bathroom Bottom: 1.2mm steel plate protection with high-density polyurethane insulation.
Electrical & Systems
- Standard: Pre-installed CE/UL/SAA compliant electrical systems.
- Capacity: Integrated 12KW system with LED panel lighting.
- Plumbing: Pre-fitted PPR water supply and PVC sewage lines for "plug-and-play" site connection.
Frequently Asked Questions
How does the 720mm folding width benefit me?
Standard 20ft expandable houses fold to ~2.2m, fitting only 2 units per 40HQ. The S20 fits 6 units, effectively cutting your per-unit international freight costs by 66%.
Is the narrow folded state stable for shipping?
Yes, the unit is precision-engineered with interlocking frame components that maintain structural rigidity during transit and crane handling.
Can it be used in cold climates?
Absolutely. The 65mm EPS panels and additional polyurethane insulation in the bathroom floor provide excellent thermal protection.
What is the setup time?
A crew of 3 can typically have an S20 fully expanded and utility-ready in less than one hour.
Does it come with a bathroom?
Yes, the S20 comes standard with a pre-installed bathroom module featuring a dry/wet separation design.
Is the start from price the final cost?
No. The start from price is for the standard configuration. It usually does not include sea freight, import duty, customs clearance, local delivery, installation, or permits unless clearly stated.
Where can I learn more about shipping, import tax, and customs clearance?
If this is your first time importing prefab houses, please read our Prefab House Import & Shipping FAQ. It explains container loading, sea freight, import duty, local tax, customs clearance, permits, and documents.
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