Futon Frame
A metal sofa bed frame with two arched arms, a fixed seat deck and a back deck that lifts on hinges from a flat bed to a sofa.
Details
Category: Beds › Convertible Beds
By Huu Khanh Nguyen · Updated November 9, 2026
Parameters
| Name | Default | Unit |
|---|---|---|
| Width Across The Arms | mattressLength + 2 * (railBarThickness + tubeDiameter) | mm |
| Depth In Bed Position | mattressWidth | mm |
| Arm Height | 685.8 | mm |
| Mattress Length | 1905 | mm |
| Mattress Width | 1371.6 | mm |
| Back Angle | 0 | ° |
| Sofa Back Angle | Math.asin(Math.min(1, (838.2 - deckHeight) / deckDepth)) * 180 / 3.141592653589793 | ° |
| Deck Depth | mattressWidth / 2 | mm |
| Deck Height | 304.8 | mm |
| Arm Tube Diameter | 25.4 | mm |
| Rail Section | 25.4 | mm |
| Arm Rail Thickness | 6.35 | mm |
| Slat Width | 63.5 | mm |
| Slat Thickness | 8 | mm |