20ft Standard Flat Pack Container House
Size: 5950 × 3000 × 2800 mm
Application: Site Office / Worker Accommodation
Flat Pack Container House China Factory
FACTORY DIRECT · BULK ORDER SUPPLY
20GP can load 8 units.
40HQ can load 18 units.
20ft modular flat pack container units designed for efficient shipping, fast on-site assembly, and flexible use in worker accommodation, site offices, temporary buildings, and modular construction projects.
CASA BOX flat pack container houses are manufactured with a prefabricated steel frame, insulated wall panels, roof and floor systems, doors, windows, and optional electrical and sanitary configurations. Each unit can be used independently or combined with multiple modules to create larger project buildings.
5950 × 3000 × 2800 mm
Standard Module Size
18 Units / 40HQ
Standard Loading Capacity
4 Workers / Approx. 2 Hours
Typical Assembly Time
Here Are Some Of Our Samples
Flat Pack Container House Models
Explore our standard flat pack container house models for offices, accommodation, commercial spaces, and modular building projects. Different sizes, door and window layouts, insulation materials, interior finishes, and electrical configurations can be customized according to project requirements.
13ft Flat Pack Office Container
Size: 10ft × 13ft model (Custom Size)
Application: Office / Reception
20ft Glass Wall Container Office
Size: 5950 × 3000 × 2800 mm
Application: Office / Showroom
26ft Flat Pack Modular Office
Size: 10ft × 26ft model (Custom Size)
Application: Project Office / Sales Office
20ft Flat Pack Site Office
Size: 5950 × 3000 × 2800 mm
Application: Site Office / Project Administration
Black Frame Container with Glass Wall
Size: 5950 × 3000 × 2800 mm
Application: Office / Commercial Space
Need a different layout or size? CASA BOX can customize flat pack container units based on occupancy, application, insulation requirements, and project quantity.
Request Custom ConfigurationWhat Is a Flat Pack Container House?
A flat pack container house is a prefabricated modular building system designed for efficient transportation and fast on-site assembly. Unlike a converted shipping container, it is manufactured as a complete building system using a steel frame, insulated wall panels, roof and floor components, doors, windows, and optional electrical or sanitary systems.
The main structural components are prefabricated in the factory and packed in a compact form for container shipping. After delivery, the units are assembled on site using the bottom frame, corner columns, top frame, wall panels, doors, windows, and interior components.
Flat pack container houses can be used as single independent units or connected side by side and stacked to create larger modular buildings. Typical applications include worker accommodation, construction site offices, temporary housing, classrooms, commercial spaces, and project camps.
How to Order Flat Pack Container Houses
Tell Us Your Project Requirement
Confirm Specification & Layout
Production & Quality Inspection
Packing & Container Loading
Shipping & Installation Support
20ft Flat Pack Container House Specifications
Standard configuration for the CASA BOX Model C 20ft detachable flat pack container house.
| Item | Standard Specification |
|---|---|
| Model | CASA BOX Model C |
| External Size | 5950 × 3000 × 2800 mm |
| Service Life | At least 20 years |
| Main Frame | Galvanized steel frame |
| Top & Bottom Beams | 2.1 mm galvanized steel |
| Column | 160 × 160 mm, 2.1 mm galvanized steel |
| Corner Fitting | 160 × 160 mm, 3.5 mm |
| Surface Finish | Electrostatic powder coating |
| Wall Panel | 50 mm rock wool sandwich panel |
| Rock Wool Density | 50 kg/m³ |
| Steel Sheet | 0.25 mm color steel sheet on each side |
| Floor | 16 mm MgO board |
| Floor Finish | PVC flooring |
| Roof Sheet | 0.40 mm |
| Ceiling Sheet | 0.20 mm |
| Roof Insulation | 50 mm glass wool |
| Steel Door | 925 × 2030 mm, 0.4 mm steel plate |
| Window | uPVC, 3 mm single glass, 925 × 1200 mm |
| Electrical System | Customized |
| Wind Resistance | 0.50 kN/m² |
| Snow Load | 0.60 kN/m² |
| Floor Live Load | 2.0 kN/m² |
| Roof Live Load | 1.0 kN/m² |
| Sound Insulation | ≥ 20 dB |
| Fire Resistance | Grade A* |
*Grade A refers to the rock wool material classification, not a fire-resistance certification for the complete building. Applicable classification and supporting documents should be confirmed for the selected configuration.
Flat Pack Container House Structure & Materials
Galvanized Steel Main Frame
The main structure is manufactured from galvanized steel and designed as a modular bolted frame for on-site assembly. The standard Model C uses 2.1 mm galvanized steel for the top and bottom beams, together with 160 × 160 mm galvanized steel columns. High-strength carriage bolts are used for the main structural connections.
The corner fittings measure 160 × 160 mm with a thickness of 3.5 mm. The frame surface is finished with electrostatic powder coating for additional corrosion protection and long-term outdoor use.
Bottom & Roof Square Tube System
The floor and roof systems are reinforced with galvanized square tubes of different sections according to their structural position.
For the bottom structure, the standard configuration includes:
- 50 × 100 mm galvanized square tube, 1.0 mm thickness
- 20 × 20 mm galvanized square tube, 1.0 mm thickness
For the roof structure, the standard configuration includes:
- 50 × 50 mm galvanized square tube, 1.5 mm thickness
- 40 × 80 mm galvanized square tube, 1.1 mm thickness
- 40 × 60 mm galvanized square tube, 1.0 mm thickness
The door frame uses 20 × 40 mm galvanized square tube with a thickness of 1.0 mm.
Insulated Wall Panels
The standard wall system uses 50 mm rock wool sandwich panels with a density of 50 kg/m³. Both sides of the panel are finished with 0.25 mm color-coated steel sheets.
Rock wool is used as the standard insulation material for thermal insulation and fire performance. Different insulation materials and thicknesses can also be customized according to climate and project requirements.
Floor System
The standard floor system uses 16 mm MgO boards installed over the galvanized bottom frame and square tube structure. PVC floor covering is used as the standard interior finish.
Different flooring options can be supplied depending on the intended use, including upgraded PVC flooring or other project-specific finishes.
Roof & Ceiling System
The standard roof uses 0.40 mm roof sheets combined with 50 mm glass wool insulation. The interior ceiling uses 0.20 mm ceiling sheets.
The roof structure is designed with integrated drainage on both sides of the beam to help manage rainwater and reduce water accumulation around the roof structure.
Doors, Windows & Interior Components
The standard configuration includes a 925 × 2030 mm steel door with an integrated frame and lever lock, together with a 925 × 1200 mm burglar-proof uPVC window using 3 mm single glazing.
Interior trim, structural adhesive, dowels and other standard installation accessories are supplied together with the unit. Electrical systems can be customized according to project requirements.
Flat Pack Container House Layouts
CASA BOX flat pack container houses can be configured for different project uses, from single rooms and site offices to worker accommodation and combined modular buildings. Door and window positions, internal partitions, sanitary areas, and electrical layouts can be adjusted according to occupancy and application requirements.
Standard Single Unit
Flexible open space for site offices, temporary workspaces or project-specific fit-outs.
Single Room with Bathroom
A private accommodation layout with a separate bathroom area.
Combined Modular Building Layout
Two modules connect to form a larger open space for project-specific use.
Shared Office Layout
Suitable for construction site offices and project teams working in one shared space.
Manager Office Layout
A private office arrangement for site managers and project administration.
Shower Module Layout
A shared shower facility for worker accommodation and project camps.
Toilet Module Layout
Separate male and female toilet areas for communal project facilities.
Canteen Layout
A multi-module dining area for worker accommodation and project camps.
Flat Pack Container House Shipping & Loading
Flat pack container houses are designed to reduce transportation volume by packing the main structural components, wall panels, doors, windows, and accessories in a compact form before shipment.
For the standard 20ft CASA BOX Model C unit, the typical loading capacity is:
20GP: 8 unitsStandard Loading Capacity
40HQ: 18 unitsStandard Loading Capacity
This loading method helps reduce the average international shipping cost per unit, especially for bulk orders and large accommodation or construction projects.
After arrival, the units are unloaded and assembled on site using the prefabricated steel frame and building components.
Why Flat Pack Shipping Is Suitable for Bulk Projects
- Higher loading quantity per container
- Lower average freight cost per unit
- Easier large-volume project deployment
How Is a Flat Pack Container House Installed?
The main structural components are prefabricated before shipment, allowing the house to be assembled on site with standard tools and lifting equipment where required.
A typical installation sequence includes:
- Position and level the bottom frame
- Install the corner columns
- Lift and secure the top frame
- Install wall panels
- Fit doors and windows
- Complete roof, floor, electrical, and sealing work
- Carry out final inspection and waterproofing checks
Under suitable site conditions, one standard unit can typically be assembled by four workers in approximately two hours.
View Installation GuideView the on-site assembly photo guide.
Flat Pack Container House Applications
Worker Accommodation
Configure individual rooms or shared accommodation with beds, storage and optional sanitary areas. Multiple modules can be combined to suit the workforce and site layout.
Construction Site Office
Create shared offices, meeting rooms or private manager offices close to the worksite. Partitions, door and window positions, and electrical layouts can be adjusted to the project team.
Temporary Housing
Use independent units for temporary accommodation with optional bathroom and interior configurations. The layout can be planned around occupancy and the expected duration of use.
Classrooms
Combine modules to create teaching rooms and supporting facilities. Seating, circulation, ventilation and electrical requirements can be coordinated during layout planning.
Commercial Space
Configure units as sales offices, reception areas or small commercial premises. Glazing, entrances and interior finishes can be customized to the intended use.
Project Camp
Combine accommodation, offices, dining areas and sanitary modules into a coordinated camp layout. Module quantities and site circulation can be planned around the project workforce.
What Affects Flat Pack Container House Price?
The price of a flat pack container house depends on the structural specification, insulation system, interior configuration, order quantity, and project requirements. A standard unit can be supplied with a basic configuration, while upgraded materials and additional building systems will increase the final cost.
The main factors that affect the price include:
Steel Frame Specification
Steel thickness and structural reinforcement have a direct impact on material cost. Projects requiring higher wind, snow, or floor load performance may require an upgraded frame specification.
Wall & Roof Insulation
Rock wool, EPS, PU, and other insulation materials have different costs and thermal performance. Panel thickness and steel sheet thickness also affect the final price.
Doors, Windows & Interior Finish
Upgraded windows, doors, flooring, wall finishes, and exterior decorative panels can be supplied according to the intended use of the building.
Electrical & Sanitary Systems
Electrical wiring, sockets, lighting, air-conditioning connections, bathrooms, plumbing, and sanitary fixtures can be added according to project requirements.
Order Quantity
Larger orders usually provide better production and transportation efficiency. Container loading quantity also has a significant effect on the average landed cost per unit.
Project & Destination Requirements
Local climate, building requirements, packing method, destination port, and shipping conditions may affect the final project cost.
For an accurate quotation, send us your required quantity, destination port, intended use, and preferred configuration.
Request Project PricingFlat Pack Container House Interior Gallery
Sturdy Galvanized Steel Frame Provides Protection Against Rust
- High-strength structural design is resistant to 10-grade winds and 8-grade earthquakes
- Electrostatic spraying, no paint loss in 10 years.
- Roof live load: 1.0KN/㎡
- Ground live load: 2.0KN/㎡
Wall Panel Insulation Material is Optional, Customized According to the Demand
- Standard rock wool sandwich panel: fire retardant heat insulation, can realize about 25-30dB sound insulation.
- Upgraded polyurethane foam sandwich panel: more excellent heat insulation and heat preservation performance, no water absorption, no rot, no fear of fire.
NOTE: All materials can be thickened to achieve the required thermal insulation performance in different areas.
A Variety of Exterior Decorative Materials, Make the Container House More Beautiful
- Pure color exterior wall, optional color card
- Pure color wave exterior wall, optional color card
- Patterned wall, optional color card
- Carved metal panel, optional color card
Magnesium Glass Board (MgO) or Cement Board Material Floor Structure, Fireproof and Moisture-proof and Moth-proof
- PVC floor leather, optional color card
- Plastic wood flooring, optional color card
- Stone plastic flooring, optional color card
NOTE: The floor structure structure can be decorated according to the demand, we provide different programs.
1、The frame of Flat pack container house is assembled from several independent standard modules by fast splicing with high-strength bolts and connectors. It can be freely combined into various shapes and layouts according to different spatial requirements, with high flexibility. The walls and roofs are made of various materials, including color steel plates, aluminum composite panels, fiber cement boards, etc., each of which has different characteristics and applicable scenarios;
2、It has the characteristics of quick disassembly and easy transportation. The standard size of the quick collocation box is usually 3m*6m*2.8m, which is widely used in construction sites as workers’ dormitories, and is also suitable for temporary housing, temporary offices, temporary warehouses, tourist attractions and Netflix hitting spots.
Production & Bulk Order Capability
CASA BOX supports both small project orders and large-volume container house procurement. Standard structural components, wall panels, and commonly used accessories are prepared according to regular production demand, helping improve production efficiency and shorten lead times for repeat configurations.
For bulk projects, production can be arranged in batches according to the confirmed specification, layout, and shipping schedule. Quality inspection is carried out during frame fabrication, panel preparation, assembly preparation, and packing before shipment.
Final lead time depends on order quantity, customization level, and the production schedule at the time of order.
Bulk Order Support
Suitable for project procurement and repeat orders.
Batch Production
Production can be arranged according to the shipping schedule.
Pre-Shipment Inspection
Components and accessories are checked before packing.
Frequently Asked Questions
What is a flat pack container house?
A flat pack container house is a prefabricated modular building supplied in compact components for transportation and assembled on site. The system typically includes the steel frame, wall panels, roof, floor, doors, windows, and related accessories.
What is the standard size of a 20ft flat pack container house?
The standard CASA BOX Model C size is approximately 5950 × 3000 × 2800 mm. Internal layouts and some dimensions can be adjusted according to project requirements.
How many flat pack container houses fit in a shipping container?
As a standard loading reference, approximately 8 units can be loaded in a 20GP and 18 units in a 40HQ, depending on the final configuration and packing method.
How long does it take to install one unit?
Under suitable site conditions, a standard unit can typically be assembled by four workers in approximately two hours. Actual installation time depends on site preparation, worker experience, and optional systems.
Are flat pack container houses delivered fully assembled?
No. The main structural components and building materials are prefabricated and packed for transportation. The unit is assembled after arrival at the project site.
Can the layout be customized?
Yes. Door and window positions, internal partitions, sanitary areas, electrical layouts, insulation materials, and interior finishes can be adjusted according to the intended use.
What insulation materials are available?
Rock wool is commonly used in the standard configuration. EPS, PU, and other insulation options can also be supplied depending on climate, thermal performance, and project requirements.
Can electrical and plumbing systems be included?
Yes. Electrical wiring, sockets, lighting, air-conditioning connections, plumbing, bathrooms, and sanitary fixtures can be configured according to the project specification.
What foundation is required?
Flat pack container houses should be installed on a level and stable base. Depending on the project, concrete pads, strip foundations, slabs, or other engineered foundations may be used. Foundation design should consider local soil conditions, building loads, wind, snow, and local regulations.
Can flat pack container houses be used for multi-unit buildings?
Yes. Individual units can be connected side by side or combined into larger modular buildings. Multi-storey arrangements may also be possible when the structural design, connections, foundation, and local load requirements are properly considered.
Can I order only one or two units?
Yes, small-quantity orders are possible. For 1–2 units, CASA BOX normally supplies on EXW or FOB Shanghai terms. If LCL shipping to the destination is required, the buyer can arrange shipment through their own forwarder.
What information is needed for a quotation?
Please provide the required quantity, destination port or country, intended use, preferred layout, insulation requirements, and any optional electrical, bathroom, door, window, or interior specifications. This allows us to recommend the most suitable configuration and calculate the project price more accurately.
Need a quotation for your project?
Send us your quantity, destination, intended use, and required configuration.
