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Origin Windows are completely bespoke to your specification and will be manufactured to the exact sizes provided. OW-80 is a casement system encompassing fixed or sashed casement configurations, bays, gables and French windows. Whatever your requirements, we can help.
Proudly manufactured in the United Kingdom at our Buckinghamshire facility.
MOREDiscover our industry leading guarantees for complete peace of mind.
MOREOur doors help your house stay warm in winter and cool in the summer.
MOREWe’re committed to your safety through compliance and accreditation initiatives.
MOREA wide range of colour and finish options ensures that there is a style to suit your home.
MOREFind out how our unbeatable delivery promises can help your project.
MOREAll Origin products are tailor-made to your requirements by our higly skilled team.
MOREFind out how our doors benefit from the strength, resilience and versatility of our premium grade aluminium.
MOREOur expert engineering allows you to focus on enjoying the products rather than taking the time to maintain them.
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Internal and external flush casement window
OW-80 features an industry-unique internal and external flush casement, sitting perfectly in line with the frame to offer an elegant finish both inside and outside your home. Stunningly designed and expertly executed, it’s thanks to the high quality aluminium we use that we’re able to achieve this design, giving you less window and more natural light.
An industry-leading guarantee
OW-80 faces rigorous quality testing at each stage of the manufacturing process at our Buckinghamshire-based factory to ensure it’s up to scratch. It’s this in-house quality control, premium grade aluminium and exceptional craftsmanship that allows us to offer an industry-leading warranty of up to 20 years. And, unlike many of our competitors, our guarantee covers all hardware and components as well as the powder coating, giving you complete peace of mind that your window will last for many years to come.
Configuration options
As a totally bespoke window, the OW-80 can be made to fit almost any size and configuration. Here are some of the more popular configurations available with OW-80, which includes top hung, right hung, left hung, French windows and fixed frames:

Key:Fixed Frame or Dummy SashTop HungLeft HungRight Hung


High quality locking system
Origin Windows are designed and built to offer the highest levels of security. The OW-80 is both PAS 24 and Secured By Design certified and features an espagnolette-style handle, which works in conjunction with Yale’s industry-leading and Secured by Design approved Encloser locking system.
Additionally, the hinges found on OW-80 are made of corrosion-resistant stainless steel and have been cycled tested to 50,000 cycles. Hinge guards feature patented anti-slip and lock technology as standard along the hinged side of the window. All window hardware is covered in our 20 year guarantee, giving you complete peace of mind that you, your family and your belongings will be safe and secure.
Size and weight limitations
As with all windows, there are some size and weight limitations that come with the OW-80:
Width | Height | Weight | |
---|---|---|---|
Maximum dimensions: | |||
Side Hung: | |||
Side Hung: | Max: 1,000mm | Max: 1,800mm | Max: 40kg* |
Maximum dimensions: | |||
Top Hung: | |||
Top Hung: | Max: 1,500mm | Max: 1,500mm | Max: 50kg* |
Maximum dimensions: | |||
French window: | |||
French window: | Max: 1,800mm** | Max: 1,400mm | Max: 40kg* |
*Maxiumum width, height & weight refers to the individual sash limitations.
**Maximum width for French window refers to the maximum width allowed in that configuration for both sashes.
Custom windows
150 RAL colours
The Origin Window can be manufactured in over 150+ colours, giving you complete artistic license to find the right style for you. If, however, you choose from one of our most popular colours, you’ll be able to receive your windows on a fast-tracked lead time.
Dark Silver Metallic (9007M)
Black Grey (7021M)
Jet Black (9005M)
Slate Grey (7015M)
Anthracite Grey (7016M)
Hipca White (9910G)
Natural Oak
Golden Oak
Wide range of handle options
Rest assured - the handles of the OW-80 window have been given the same level of attention and care as every other component and are the perfect finishing touch to the elegantly designed window.
All offering a modern and stylish design that’s not only a pleasure to look at but also touch, our window handles can be colour coordinated to match the window frame.

Lowering your energy bills
Combined with a polyamide thermal break within the aluminium profile, OW-80 not only meet thermal efficiency building regulations, it exceeds them. Our sophisticated design means that your home will be kept warm in winter and cool in summer, in turn helping to lower your energy bills.

A++ with Aerogel
OW-80 is the only window on the market to offer sophisticated Aerogel technology, boosting energy efficiency to the highest possible A++ rating. Aerogel insulation is so powerful it’s used in spacecrafts and spacesuits, offering thermal efficiency that’s truly out of this world. Upgrading to Aerogel can increase the insulation of windows by up to 67%, achieving a U-Value of 0.8W/m2K with Origin’s OW-80 Window.
Find out more about AerogelWhat to do next?
- Find your local installer
Complete the form - Arrange a consultation with them to discuss your project
- Book a convenient date for them to install
- Enjoy your home's new lease of life
Explore our range of windows
Whether you’re planning a replacement, renovation or a new build, we have a range of window types and configurations available to suit your desired aperture. Whether it’s a Bay, Casement, Fixed, Bi-folding, French or Gable window, each type is guaranteed to deliver smooth, flawless and effortless operation as it is made using premium-grade aluminium. Every aspect is completely tailored, including your size and colour scheme.
OW-80 premium window
OW-70 slimline window
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