Introducing the Origin Slim-line Window (OW-70)

A truly elegant window. Maximise the light coming into your property with the Origin OW-70 Window.


The Origin Slim-line Window

Sleek, strong and elegant are a suitable way of describing the OW-70 slim-line window. Made from premium aluminium it is one of the finest windows on the market. The OW-70 is available as a fixed window or casement configuration. It is an ideal option when you want to maximise light coming into your property.

Why choose the Origin Slimline Window?


Up To A 20
Year Guarantee

High Grade



150 RAL



What’s your type?

With sight-lines of only 65mm the Origin OW-70 is a perfect solution if you are looking to maximise natural light coming into your property. Additional benefits, are bigger views of your outside space. With an industry leading product guarantee of up to 20 years, you also have total peace of mind.




Handle choice

All our orders are totally bespoke. Nothing is off the shelf! The OW-70 is totally bespoke and tailor-made to your property, so they fit perfectly every time. The OW-70 comes with an inline or crank handle. Both options will deliver a finish that fuses elegance and efficiency. The choice is yours.

Your colour

With well over 150 RAL colours available, you choose the style that is right for you and your home. If you are looking for your window to be made in one of our popular colours: black, anthracite or white, Lincolnshire Bi-folding Doors, will be able to deliver them even more quickly. There are also a number of wood effects available that give the look fo real wood but without the maintenance.




Configured your way

Investing in your home is always a big decision. With the Origin window range you really can configure virtually everything, from the way it opens to the colour and hardware. Everything is made in the UK to your exacting requirements and you can rest easy, knowing you are covered with a product guarantee of up to 20 years.

Safe & Secure

All Origin products from Lincolnshire Bi-folding Doors, use premium grade aluminium to deliver strength, durability and quality. Our products won’t twist or warp over time like some of the alternatives. Whilst this window is slim-line be under no illusion of its strength and security. With a multipoint locking mechanism it is extremely secure and will deter any would be intruders.




Thermal Efficiency

The OW-70 has a polyamide thermal break making it very thermally efficient. In fact it exceeds current building regulations. So you and your family will be cool in summer and warm in winter. The added bonus is you will also have the benefit of lower fuel bills as well.

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