FD30 & FD60 Timber Frame Minimum Dimensions and Specification
FD30 Flush Frame Specification
| Material | Minimum Density | Minimum Frame Face Width - Single Acting | Minimum Frame Face Width - Double Acting | Minimum Frame Depth | Minimum Stop Width |
| Softwood or Hardwood | 450kg/m3 | 32mm excl. Stop | 38mm | 70mm | 12mm |
| MDF | 700kg/m3 | 45mm excl. Stop | Not Permitted | 70mm | 12mm |
FD60 Flush Frame Specification
| Material | Minimum Density | Minimum Frame Face Width - Single Acting | Minimum Frame Face Width - Double Acting | Minimum Frame Depth | Minimum Stop Width |
| Hardwood | 640kg/m3 | 32mm excl. Stop | 38mm | 70mm | 12mm |
| MDF | 700kg/m3 | 45mm excl. Stop | Not Permitted | 70mm | 12mm |
FD30 Rebated Frame Specification
| Material | Minimum Density | Minimum Frame Face Width - Single Acting Only |
Minimum Frame Depth |
| Softwood or Hardwood | 450kg/m3 | 32mm for the body of the frame, with the door mounted on a 22-24mm projection, with a 32mm deep + 12x12mm rebate to act as a stop | 70mm |
FD60 Rebated Frame
Specification
| Material | Minimum Density | Minimum Frame Face Width - Single Acting Only |
Minimum Frame Depth |
| Hardwood | 640kg/m3 | 32mm for the body of the frame, with the door mounted on a 22-24mm projection, with a 42mm deep + 12x12mm rebate to act as a stop | 70mm |
Note:
1. Timber and MDF frames to have a minimum measured density at
12% moisture content.
2. The complete Forza Doors range of approved sizes and
configurations utilising the Forza intumescent seal specification
are suitable for use within the above detailed frames.
3. Head/jamb joint: Mortice & tenon or half-lapped (head twice
screwed to each jamb) or mitred or butt joint (glued non thermally
softening adhesive and head twice screwed to each jamb).
4. Architraves are optional and have no fire performance
requirements.