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Origin OB-72 Bifold

The Origin 0B-72 door system is a cleverly designed, beautifully made, and exquisitely finished sliding folding door system that features a unique free-glide running system. Offering sightlines of 72mm and chamfered beading, it provides a more traditional style and, given its innate strength, it means that it can accommodate door sets of up to twelve doors in a single configuration, as well as corner bifold setups.

Our Diamond Windows Droitwich aluminium casement door styles are a popular choice for homeowners because of their classic, chic appearance and ‘A’ energy rating, ensuring your home retains heat, saves you money, and looks good doing it.

Origin Bifolding Doors



  • Outer Frame Depth 75mm
  • Sash Depth 59mm
  • Individual Sash Sightline 72mm
  • Hingestile Glass to Glass Sightline 154mm
  • Track Height (not including rebate) 50mm
  • 1-star diamond cylinder as standard
  • The doors are bottom running and incorporate a unique free
    glide carriage assembly, which uses acetal rollers with sealed
    stainless steal bearings on an 8mm hardened stainless steel axle
  • Chamfered bead internally and externally
  • 8-point locking system and includes chamfered 20mm linear
    bolts and deep throw 25mm security hooks
  • Thumb-turn option available
  • Each door comes with 2-5 solid zinc security hinges
    depending on height
  • Finger pull handle option to facilitate operation of even
    numbered door sets from the outside


All lead doors greater than 1125mm tall contain the Origin multi-point lock.

The Origin multi-point lock offers eight points of locking and is part of the reason the overall door system is PAS 24:2016 certified. Additionally, it achieves the Secured by Design accreditation.

In addition to the standard 1-star cylinder, you can upgrade to our 3-Star British Kite Mark Cylinder.


  • Minimum Sash Size Width  (mm) 325
  • Minimum Sash Size Height (mm) 400
  • Maximum Sash Size Width (mm) 1200
  • Maximum Sash Size Height (mm) 2876
  • Minimum Sash Size Width (mm) With multi-point lock 325
  • Minimum Sash Size Height (mm) With multi-point lock 1000
  • Maximum Sash Size Width (mm) With multi-point lock 1200
  • Maximum Sash Size Height (mm) With multi-point lock 2876
  • Minimum Sash Size Width (mm) Even sets going in one direction 700
  • Minimum Sash Size Height (mm) Even sets going in one direction 1000
  • Maximum Sash Size Width (mm) Even sets going in one direction 1200
  • Maximum Sash Size Height (mm) Even sets going in one direction 2876

Relax, Origin has you covered

Our Origin Slimline Aluminium Windows and Doors are covered by a 20-year manufacturer guarantee, so you can relax knowing that your windows will last for years to come.

Alternative Shades

Our collection of Origin OB-72 doors can come in up to 150 RAL colours and modifiable designs. In order to give it a flawless finish, the highest-grade powder coating is applied to the aluminium; with a durable yet smooth finish, it offers the benefit of being highly resilient to the elements.


How much are bifold doors?

The bifold door cost will vary from property to property. For instance, glazed bifold doors that are internally fitted may differ in price from externally fitted doors. Regardless of your home’s specific conditions, though, you can rest assured that the ‘A’ energy rating will save you money on your bills and will likely increase your property’s value.

10 Year Guarantee

All of our double-glazed casement windows are easy to maintain and keep looking like new, partly due to their durability and longevity. We’re so confident in our windows that we offer a ten-year guarantee as standard.

Shop OB-72 Doors with Diamond Windows

When searching for double-glazing specialists in the West Midlands, you needn’t look further than Diamond Windows. We’re well-equipped to supply and install aluminium front doors, so please don’t hesitate to get in touch regarding your door needs. Our expert team will be more than happy to advise you about our OB-72 door range or any other door types.

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“Very pleased with work carried out. Approachable staff very pleasant.”

“The Diamond Window guys installed our new front door and sidescreen and did a fantastic job. They were highly skilled and also very tidy. I would use them again”

Trust our 5-Star Reviews

“Excellent selection, first class advice and outstanding fitting. We wouldn't go anywhere else for double gazing projects.”

“From design to completion , excellent service,friendly and competent tradesmen.”

Contact us
Diamond Windows, Unit 22, Northstreet I.E, Droitwich,West Midlands, WR9 8JB
Company Reg: 5367399
Open Hours
Mon to Fri: 9am to 4.30pm
Sat: 9am-1pm
Sun: By appointment