Jinjiama Prefab Housing
Engineering Specifications

JJM 20ft Expandable Container House

Every unit is pre-assembled, wired, and plumbed at our manufacturing plant (Tangshan Jinjiama Prefabricated Housing Co., Ltd.) before international shipping.

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Complete Dimensional & Structural Schedule

Living Area398 sq ft (37.0 m²)
Bedrooms2 Bedrooms
Bathrooms1 Full Bathroom (Wet/Dry Separation)
Dimensions (Deployed)5,900 mm L × 6,300 mm W × 2,480 mm H (19.4 ft × 20.7 ft × 8.1 ft)
Dimensions (Folded)5,900 mm L × 2,200 mm W × 2,480 mm H (Standard 20ft Shipping Envelope)
Structural ChassisHigh-tensile welded steel structural chassis with ISO container corner castings
Wall & Roof Core50mm-75mm high-density thermal insulated composite wall and ceiling panels
Windows & GlazingBroken-bridge aluminum insulated double-glazed windows (5+9A+5)
DoorsBroken-bridge aluminum glass entrance door with heavy-duty multi-point lock
Subfloor & FinishStructural fiber cement base board with moisture-proof commercial vinyl surface
Electrical Infrastructure110V / 60Hz US Standard Pre-Wired Outlets, LED Fixtures, and Main Panel
Plumbing InfrastructureFactory pre-installed PEX hot/cold plumbing and PVC drainage lines
Manufacturer Warranty1-Year Manufacturer Structural & Component Warranty
Turnkey Base Price$22,000 (Complete turnkey base package)
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Free Contractor CAD Blueprint Package

Planning to permit or prepare a foundation? Download the complete 24-page stamped architectural CAD drawing set, pier loading schedules, and foundation layouts.

JJM 20ft Expandable Container House Finished Exterior
Exterior elevation of the JJM 20ft Prefab Container House

Standard Equipment Inclusions

  • Pre-assembled expandable folding steel wing structure
  • Double-glazed windows with protective screens
  • Finished kitchen cabinet assembly with countertop and sink
  • Complete partitioned bathroom with shower, toilet and sink
  • Pre-wired interior lighting and power outlets
  • Integrated main distribution breaker box
See Available Custom Upgrades →

Detailed Gallery & Layout Drawings