Introducing our Slimline Window (OW-70)

The difference between OW-70 and OW-80

The main difference between OW-70 and OW-80 is the way that they look.

OW-70 offers the slimmest sightlines at just 65mm wide, ideal for those looking to maximise on natural light and views. OW-80 may not offer sightlines as slim as OW-70, however, it offers an internal flush casement, which OW-70 cannot provide.

Both OW-70 and OW-80 are manufactured using premium grade aluminium, are durable and low maintenance, and come with an industry-leading guarantee of up to 20 years.
Learn more about our OW-80 window.

Ultra-slim sightlines

Completely bespoke and made using premium grade aluminium - just like all Origin products - the OW-70 offers a slimline alternative guaranteed to modernise your property.

Achieving a sightlines of just 65mm, the Origin Slimline Window is one of the slimmest windows available with a guarantee of up to 20-years. These ultra-slim sightlines mean less frame and more natural light, as well as better views. Available as either a casement or fixed window, the OW-70 is ideal for spaces where maximising glass size and light is essential.

Why aluminium is the first choice for replacement windows

The OW-70 is also available with two beading options, square or chamfered, giving you ultimate flexibility in specifying a window that suits not only your personal taste, but your building’s character.

Over 150 RAL colours

With over 150 RAL colours to choose from, you’re bound to find the perfect colour windows for your home.

Windows with you in as little as 24-hours

If you need your windows urgently, then choosing one of our popular colour options is for you. Available in as little as 24 hours, our popular colour options for OW-70 are 7015M, 7016M, 7021M, 9005M, 9007M, 9910M, 9910G and 9910G/7016M (dual colour). All are able to offer and elegant finish for properties old and new. Please note - your windows will be delivered to your chosen Partner and the install will be based on glass and their installation availability.

7016M (Anthracite Grey, Matt)

9910G (Hipca White, Gloss)

Built with security in mind

The OW-70 is crafted using premium grade aluminium to offer the same levels of strength, durability and high quality that Origin products are renowned for.

Tested to some of the highest standards, the thermal efficiency exceeds current building regulations, is Secured By Design and PAS 24 certified and has also achieved resistance to racking and static torsion certificates. The OW-70 may be slim, but it is also incredibly strong.

The lock itself is a stainless steel multi-point lock, which is fitted to accurately align with the keeps. The number of locking points vary depending on the size of the window, meaning security is not compromised no matter how big your window is.

So confident in our design, we offer an industry-leading guarantee of up to 20‑years, in non-marine environments. So, you can rest assured that your Origin Windows will last for decades.

Impressive thermal efficiency

OW-70 can achieve a leading U-Value rating of 1.2 W/m²K when using triple glazing panes, which meets and beats current building requirements. When chosen with a short leg, the OW-70 achieves an A energy rating.

An eco-friendly alternative

Feel good about your purchase, knowing that your windows have been made using one of the most environmentally friendly metals on the planet: aluminium. Aluminium can be recycled infinitely, with up to 85% of all aluminium ever produced still in circulation today, making it one of the most sought-after materials in construction. Compared to other popular door and window materials, such as uPVC and timber, aluminium is by far the more ecological choice.