Technical Specifications - Bi-folding Door Performance
1.9
U Value
W/M²K
W/M²K
600 Pa
Air
Permeable
Permeable
300 Pa
Water
Tightness
Tightness
1200 Pa
Wind
Resistance
Resistance
This bifold door is severe weather rated BS6375 Part 1 Class C. These statistics apply when using: Double-glazing, argon filled (low-E, en=0.05, soft coat), 16mm or more (1.2 Glass - U Value centre Pane*).
Downloads - Installers/ DIY Technical Manuals
| Document Description | Download |
| Bifolding Door Fitting Instructions - Installation manual |  (3.4Mb) |
| Bifolding Door Sliding/ Floating Mullion - Technical drawings | (0.7Mb) |
| Bifolding Door Typical Sections - Technical drawings (Outer frame & Head Extensions, Jamp, Meeting Stiles, cills etc.) |
(1.5Mb) |
| Bifolding Door Standard and Low Thresholds (including drainage) - Technical drawings | (2.1Mb) |
| Bifolding Door Square and Rounded Sash, Profiles Compared - Technical drawings | (0.6Mb) |
Specification - Bi-folding door Sizes
| Min. Overall Width (mm) | 1400 |
| Max. Overall Width (mm) | 6000+ |
| Min. Overall Height (mm) | 1950 |
| Max. Overall Height (mm) | 2500 |
| Max. Panel width (mm) | 1000 |
| Max. Weight Per Panel (kg) | 80 |
Notes
- Compliant with building Regs.
- Our bi-folding door is up to 6 metres wide as standard, for wider widths just contact our Sales department.
- 6mm - 38mm Glazing options, can be supplied unglazed.
- Applications include - hotels and restaurants, stores and in private houses, residential (in conservatories etc.).
- A bi-folding can replace an entire wall; which you can open to create a larger space, or as a patio door you can completely open - in summer.
- Frame is supplied in knock down kit form, only for largest bi-folds or if requested.
Specification - Frame Dimensions
| Outer frame depth at widest point - front to back(mm) |
78 |
| Outer frame depth at the edge - front to back(mm) |
70 |
| Sash Depth - front to back (mm) | 70 |
| Threshold Height - standard (mm) | 63 |
| Low Threshold Height - optional (mm) | 33 |
| Glass - Clear Toughened - standard (mm) | 28 ( 4 x 20 x 4) |
Specifications - Glass Sight Lines
| Head (mm) | 108 |
| Bottom (Including Low threshold) (mm) | 113 |
| Bottom (Including Standard Threshold) (mm) |
108 |
| Jambs (mm) | 108 |
| Meeting Stiles (mm) | 185 |
Note: Bottom sight line is greater on the low threshold option, this is not a mistake.
Bifolding door Opening styles
All doors can open in or out.
| No of Door Panels | 2 | 3 | 4 | 5 | 6 | 7 | 8+ |
| Min Width | 1400 | 2100 | 2800 | 3500 | 4200 | 4900 | Please |
| Max Width | 2000 | 3000 | 4000 | 5000 | 6000 | 7000 | Ask |
| No of Door Panels | All |
| Min Height | 1950 |
| Max Height | 2500 |
BEFORE PURCHASING A BI-FOLDING DOOR.....
make sure you read our "Did You Know" fact sheet.
