This comprehensive range of conventional colours are available at a reduced cost and a reduced lead time, when compared to special RAL colours.
Please note that on-screen representations of painted colours are for guidance only, intended to provide an indication of colour.
Duration Windows cannot be held responsible for any discrepancies between on-screen and actual painted colours.
Our Trend Colour Range is a cost effective and unique range of metallic and textured paint finishes. They are ideal for both modern architecture and restoration projects.
The Trend range has a broad pallet of colours that are pleasing to the eye and to the touch. Here we show a selection of just three of the available colours.
Our Bifold Doors are available in any single or dual special RAL colour paint finish. There are over two hundred different RAL colours available.
Click the link below to see a selection of the available RAL colours.
Choose from clear, laminated, solar control and integral blind options to suit performance, privacy and comfort requirements.
Please note: Glass is supplied separate of the frames and the doors will need to be glazed on site. This helps improve transport and handling while helping ensure your doors arrive in excellent condition.
Premium bifold hardware engineered for strength, smooth operation and a clean, contemporary aesthetic.
If your chosen configuration includes a traffic door, it will be fitted with an industry standard lever-lever handle. Designed for ease of use, it provides quick and convenient access from both inside and outside.
Each handle is fitted with a high security cylinder and operates a multi-point locking system for enhanced protection.
Flush-line intermediate handles are recessed into the sash profile to create a clean, minimal appearance and allow tight stacking of panels.
Strong and practical, they enable easy operation of the doors without the need for additional pull handles, while driving heavy-duty shoot bolt locking with key locking as standard.
Emperor bifold doors feature cleverly engineered concealed hinges, hidden within the door leaf when closed to maintain uninterrupted sightlines.
This design delivers a clean, modern aesthetic while maintaining strength and durability.
Hinges are concealed when closed and are supplied in black.
Stainless steel four-wheel bogie assemblies run on twin stainless steel tracks, delivering smooth, stable and effortless operation.
Designed to support the full weight of the doors, they include a guide system within the outer frame for enhanced stability and security.
Supplied in black to complement the hinge system.
Buffer magnets are fitted where required to hold the traffic door securely against the adjacent panel when open.
They also prevent handles from striking neighbouring panels and help control the door in windy conditions.
Available in a range of finishes. Painted finishes are not recommended due to reduced durability.
A traffic door provides quick everyday access without needing to open the full set of bifold panels.
Where a traffic door is not included, multiple panels must be opened to gain access.
Bifold doors operate in pairs, meaning an odd panel can function independently — this is known as a traffic door.
Emperor bifold doors have been designed and manufactured with security in mind, combining robust hardware, secure glazing and dependable locking points to help keep your home safe and secure every day.
When anyone has new windows or doors installed in their home, security is almost always one of their main priorities. That is why all of our doors have been designed and manufactured with security in mind, giving excellent security without compromise.
From high security multipoint locking and superior cylinders through to internally glazed units and anti-jemmy bogie guidance, every detail has been developed to help keep the system safe, secure and dependable.
Traffic doors allow for outside access and as a result need to be highly secure. Traffic doors are fitted with the latest high security multipoint locking as standard. The locking mechanism is operated by a lever-lever handle and has a total of six locking points, including deep throw hook locks, a latch, dead bolt and adjustable roller cams that pull the doors in tight and provide excellent weathering.
The weakest point of a locking system is often the locking cylinder, which is why these doors use more than a standard euro cylinder. The cylinder is pick resistant, bump resistant and drill resistant, and includes a sacrificial break slot to help it remain more secure in the event of being snapped.
Although intermediate handles are generally positioned internally, they include a key locking facility as standard for added peace of mind. This is particularly useful on bifold configurations without a traffic door. Intermediate handle cylinders can also be keyed alike so that one key can operate every intermediate handle on the bifold.
Heavy duty shoot bolts secure the door at the top and bottom of each intermediate panel. Each set of shoot bolts is operated by rotating the Flush-line handle 360°. They are designed to provide a tight fit for maximum compression and smooth engagement when securing the panels into the outerframe, helping create a solid barrier against forced entry.
The bogie wheel assemblies have a dedicated guide that runs inside the channel of the outerframe at the top and bottom of the doors. This guide gives the doors additional strength and stability, while also providing anti-jemmy security to help prevent the folding panels from being forced or levered off the track.
These bifold doors are internally glazed using a high security glazing bead and wedge gasket. Because the sealed units are installed from the inside, they can only be removed from within the property. Toughened safety glass is supplied as standard, with laminated security glass also available as an upgrade.
Choose from a standard fully weather rated threshold or a lower rebated weather rated option, depending on installation requirements and site exposure.
A fully weather rated threshold option recommended where greater weather performance is required.
Fully weather rated.
Fully weather rated.
A lower rebated threshold option for more sheltered locations where a reduced step is preferred.
Weather rated.
Weather rated.
A selection of recent projects and detailing.
Technical information and specification guidance for the Emperor concealed hinge bifold door system, including recommended sizes, profile dimensions, sight lines, performance and opening styles.
¹ Please note: if the door style includes a traffic door, the minimum height will be higher at 1755mm, as the traffic door hinge is a pre-extruded part.
| Detail | Dimension (mm) |
|---|---|
| Head / Top (A) | 120 |
| Extended Head (A) | 162 |
| Hinge Jamb (B) | 120 |
| Locking Jamb (C) | 123 |
| Meeting Stiles (D) | 135 |
| Standard Threshold (E) | 120 |
| Threshold + Cill (E) | 145 |
| Low Threshold (E) | 85 |
Diagram illustrates section references used in the table above. All dimensions relate to open-out configurations.
¹ Trickle vents require a 42mm head extension.
² Optional 25mm projection cill available.
These statistics apply for open out doors fitted with a suitable glass unit.
Doors shown are all viewed from the outside. All doors can be made to open in or out, and there is no cost implication to choosing open in or open out doors.
Download specification sheets and full product brochures.
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