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Sofa Bed Mechanisms: Japanese, Balkan and Zero-Wall Compared

7 November 2026 · 2 min read

The mechanism you choose for a sofa bed defines how easy it is to use, how the frame is designed and how much floor space it needs.

  • Japanese mechanism: for metal and wooden frames; converts from seating to storage and bed. The Super Japanese model needs no pulling away from the wall.
  • Balkan mechanism: for wooden frames in single, double and triple sofas.
  • Zero-wall mechanisms: Mini and Midi zero mechanisms open with zero clearance from the wall.
  • Bed base mechanisms: gas springs of 300–1500 N lift the base lid to about 40°; auto-lock versions keep it open safely.

Browse our mechanisms.

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