A premium large-format bi-folding system with industry-leading 3000mm height capability, element sizes up to 1200mm width, and robust 2–8 leaf configurations — engineered for demanding residential and commercial projects.
Maximum 3000mm height and 1200mm width per leaf — perfect for large-scale architectural projects and grand openings.
77mm system depth with robust profiles engineered for larger, heavier panels and commercial-grade durability, up to 2–8 leaf configurations.
Accommodates 6–63mm glass including double and triple glazing, with Low-E, acoustic and security options.
Class 4 air tightness, 9A water resistance (600Pa) and C3 wind resistance (1200Pa) — engineered for exposed locations.
| Specification | CF68 — standard residential | CF77 — large-scale projects |
|---|---|---|
| System depth | 68mm | 77mm (+13%) |
| Maximum height | 2500mm | 3000mm (+500mm) |
| Maximum width | 1000mm | 1200mm (+200mm) |
| Max panel weight | 90kg | ~120kg (+33%) |
| Number of leaves | 2–7 | 2–8 |
| Glass thickness range | 12–55mm | 6–63mm |
| Frame Uf-value | 1.8 W/m²K | 2.25 W/m²K |
| Full door Uw-value | 1.1 W/m²K | 1.64 W/m²K |
| Meeting section | 131mm | 144mm (ext) / 122mm (int) |
| Best for | Standard homes, extensions | Large openings, commercial |
Independently tested and certified to exceed UK Building Regulations and industry standards.
| Performance category | CF77 result | Standard / method |
|---|---|---|
| Thermal insulation (frame) | 2.25 W/m²K | EN ISO 10077-1 |
| Thermal insulation (full door) | 1.64 W/m²K | EN ISO 10077-1 |
| Air permeability | 600Pa · Class 4 | EN 12207 |
| Water tightness | 600Pa · 9A | EN 12208 |
| Wind load resistance | 1200Pa · C3 (enhanced) | EN 12210 |
| Acoustic insulation | 34–45 dB Rw(C;Ctr) | EN ISO 717-1 |
| Burglar resistance | RC2/WK2 | EN 1627-1630 |
| Operating force | Smooth · Class 4 | EN 12046-1 |
| Mechanical durability | 10,000+ cycles | EN 1191, commercial grade |
| Maximum sizes | 3000mm × 1200mm | Manufacturer tested |
| Rebate height | 25mm | — |
| Warranty | 10–20 years | — |
Entry-level bi-folding system with 131mm slim sightlines.
Next-generation sliding system with superior insulation — our sliding alternative.
Speak to our team for a free, no-obligation quote — Romsey, Southampton, Winchester & across Hampshire.
Call 01794 721 100