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Origin OW-80 Windows

The Origin Premium Window (OW-80) modernises the design of traditional 19th Century timber windows, with an exquisite internal and external flush casement and unrivalled thermal performance, the Origin premium window also offers the added benefits of hassle-free maintenance and being manufactured from a premium grade aluminium for long term reliability.

Our aluminium casement window 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.


Outer Frame Depth 80mm

Sash Depth 80mm

Frame and Sash Sightline 91mm

Mullion and Sash Sightline 148mm

Internal and external flush casement. The sash closes into
the frame, sitting in line with both the inside and outside
of the window

Chamfered bead

Mechanically double crimped corners

Easi-clean mechanism on side hung configurations that
are between 400-700mm

Yale Encloser locking mechanism

Stainless steel friction stay hinges

Night vent function


T he OW-80 is PAS 24:2016 certified and Secured by Design Accredited.

Casement windows* have been impact tested up to 2633Pa and fixed windows
tested to 3591Pa without failure or any sign of weakness in the crimps.

Hinges are made of ferritic stainless steel (to BS EN 10088-2 Grade, previously known as 304) for
enhanced corrosion resistance. The hinges are tested to 50,000 cycles and feature a friction
adjustment which has no metal to metal contact, ensuring minimum wear.

Hinge guards featuring patented anti-slip and lock technology are fitted as standard along the
hinged side of the window.

The Yale Encloser lock is fitted to accurately align with the keeps. The cams are manufactured
to be finely adjustable, if necessary.



Frame Depth (mm): 70mm

Glazing (mm): 24mm or 28mm double or triple glazed units

Top Hung Max Height (mm): 1500mm

Top Hung Max Width (mm): 1500mm

Side Hung Max Height (mm): 1800mm

Side Hung Max Width (mm): 1000mm

Relax, Origin has you covered

Our Origin Premium Aluminium windows 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 OW-80 windows 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.


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 OW-80 Windows 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 in supplying and installing aluminium windows, so please don’t hesitate to get in touch regarding your aluminium window needs. Our expert team will be more than happy to advise you about our OW-80 window range or any other window types.

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Trust our 5-Star Reviews

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

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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