For models intended for sleeping, the mechanism defines how easily it converts and the quality of the resulting bed.
Plywood is a reliable mid-range choice. Chipboard is the most budget-friendly but also the least durable and may crack over time. 2. Transformation Mechanisms
Best as a guest option; involves a mattress folded inside the frame. 3. Internal Fillers and Support tehnicheskie harakteristiki divan
Technical specifications for sofas ( tekhnicheskie kharakteristiki divana ) cover several critical layers of construction that determine durability, comfort, and functionality. Key parameters include the internal frame, the transformation mechanism for sleeping, and the filling materials. 1. Frame Construction ( Karkas )