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The slimline Origin OB-49 bifolding doors let even more light into your home thanks to their impossibly thin lines and elegant appearance.  Choose one of the newest and best British bifolding doors to add space and even more light into your home with a more minimal overall appearance.

Expertly-made professionally fitted and built to last.  An Origin bifolding door enhances any existing or new space with cutting-edge slimline bifolding doors with a high specification and one of the smoothest slide and fold actions.

As standard you get one of the best locks on the market with eight separate locking points, colour matched door seals, peace of mind safety features and lots of great personalisation options.  These outstanding doors also come in a single or double hinged door option giving you one of the thinnest side or back doors for your home too, maximising your views.

Technology & Design

Origin OB-49 bifolding doors offer some of the thinnest sightlines of any leading brand, enhancing the glass sizes and giving a greater feeling of space.  These doors come designed to remove the barrier between the inside and outside of your home and come with the option of a low or flush threshold.

Each door sash comes at just 49mm wide, combined to give an overall sightline of 110mm with the doors in the closed position.  You get the same sophisticated insulation, creating a thermal break and improving the overall U-Values and performance of the product. All profiles come with a durable, marine-grade powder-coated surface finish.

Clever engineering combined with high-grade components make Origin doors light and smooth to open while being one of the most attractive doors on the market.  An overall square appearance inside and out sets these doors apart visually from other brands. Best of all is the effortless, quiet and smooth action of Origin doors, opening and closing with ease.

origin ob-49 open bifold doors looking out to a garden room

Product Details

Re-engineered from the successful OB-72 product but with reduced aluminium profiles, more glass and better views of your patio and garden. The OB-49 bifolding doors range comes in two up to seven panels and matching single or double doors. Bespoke, high quality doors tailored to your design and style choices.

  • Contemporary styling with a square look throughout with thin proportions to the outer frame and door meeting mullions.
  • Available from two to seven panels with a choice of standard, low or flush threshold, designed into your home or new extension.
  • Finger safe gaskets between the doors provide a valuable safety feature and come in eight different colours to match the aluminium.
  • Premium Hafi luxury stainless steel handles as standard.

origin-ob-49 bifolding doors three panels white in brick opening


Origin OB-49 Bifolding Doors come with the most comprehensive options for customising your door to your exact requirements.

Choose doors opening out or in, sliding to the left or the right. Configure your doors with a traffic door letting you use it daily without having to fold all the panels back. Our doors also couple to gable windows above or fixed windows to the side, letting you create distinctive door screens in your home.

150 different RAL colours come in all manner of grey, black, metallic and bold vibrant colour. You can also have colour matched door seals, where other doors only come in black. Choose from black, white, light grey, graphite grey, light oak, bronze, chestnut brown.

Choose from the comprehensive range of hardware and handle colours only available with Origin products.  Luxury Handles in stainless steel, colour matched to your doors or in a contrasting colour.  You can also choose different colour door hinges, intermediate handles and even down to the door running gear.

This door is the ideal model for steel-look industrial style bifolding doors.

buying origin bifolding doors

Security & Performance

Developed for the Origin door, the unique 8-point locking system conforms to the latest security standards, securing the sealing the doors. The lock system conforms to the latest security standards for doors.

Combined with a luxury handle, the door works by engaging long bolts into the frame and compressing the door against its seals. Added to this is a 25mm bolt operated with a key. As standard, the doors come with a 3-Star Diamond, British Standard Kitemark locking barrel. Doors come glazed internally preventing removal of glass from the outside. Even the door hinges come designed to resist attack.

Door U-Values depend on glass specification but exceed the requirements of current Building Regulations and ultra-low U-values of 1.2Wm2K with a triple glazed unit.

Product Features


Using a series of sophisticated rollers and guides, the bifold hardware uses components designed by Origin and not after-market generic door parts. The same extends to the slave and D-handle – both of which have multiple cycle tests, a testament to their longevity and reliability. They even come in a choice of stainless steel or colour matched finishes.

Other components such as the door hinges, locking gearbox, bifold door track and other parts come with the latest innovations in door hardware, expertly-made and designed to provide you with superior smooth performance, reliable security and the best weather performance. Origin doors even come hurricane tested thanks to the engineering and premium-grade hardware.

Quality door magnets keep your open doors in place while looking sleep and blending in with the door frames. Also at the top of the door is one of the best top trolley systems designed to keep the frames in place, secure and with never any risk of jarring or juddering as they slide along their tracks.

Unique colour matched gaskets, not available with other bifolding doors complete the look of your new doors. At the same time, they provide valuable finger protection should young hands get trapped between the doors. Finally, all the door hardware performs faultlessly while looking beautiful. This overall quality, reliability and durability are what makes Origin doors come with a 20-year guarantee.

Bifolding doors as French doors in a grey colour


As standard, your doors come with toughened safety glass, having a soft-coat low-emissivity coating, warm edge spacer bars and argon gas fill.  This glass is of the finest quality for clarity and energy efficiency.

You can upgrade your glass to other solutions depending on the location of your new bifolding doors. For instance, south-facing elevations may benefit from solar control glass.

White Origin OB-49 bifolding doors slimline mullion looking through the glass


Origin OB-49 bifolding doors come in all the desirable colours to blend in or contrast with your home and interior decor.

Classic white finishes, contemporary matt or satin grey colours, rich black and a choice of over 150 other colours. Every door comes with a durable, marine-grade powder coating, applied to strict industry standards and protecting the aluminium profiles beneath. So whether you choose a single colour, dual colour or woodgrain finish, you get the same professional application, long guarantee and low-maintenance properties.

The quality of the powder-coated finish can be seen and touched, adding to the overall elegance of these contemporary, slim and beautiful bifolding doors. .

colours available with Dutemänn FD85 Bifolding Doors

Energy Efficiency

Polyamide thermal breaks insulate the aluminium profiles and work with the high specification glazing to provide excellent energy efficiency and overall thermal performance.

Origin OB-49 bifolding doors come designed for the unpredictable British climate. They meet all current Building Regulations with U-Values of 1.5Wm2K with a standard unit and as low as 1.2Wm2K with a triple glazed unit.

Therefore, your new doors help keep your home warm in winter, cooler in the summer and help save money on your energy bills.

Some of the images on our website are indicative images illustrating how products may look. Please contact us for full product details and specifications.

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