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High Quality Components
High Quality Components
slim sight lines
44mm door mullion
Energy Efficiency
Excellent Energy Efficiency


The Origin OS-44 sliding door is slim, modern and designed to give you all the familiarity of classic sliding doors with all the latest design and technology.  

Thin aluminium profiles ensure the best clarity and light transmission in your home.  Designer door handles add a touch of style, while advanced locks, seals and gaskets give you all the security and weather protection you need. 

One of the newest sliding doors on the market from Origin, one of the best British brands.  The Origin OS-44 sliding door perfectly replaces your old doors and enhances your forthcoming extension with a high quality, reliable and attractive product.  

Technology & Design

Polyamide thermal breaks insulate the high quality aluminium profiles.  The powder coated finish is marine-grade, thicker than standard powder coated finishes and offers low maintenance properties, with just simple occasional cleaning needed. 

The high quality craftsmanship of every Origin product is further demonstrated by the engineering.  The rollers are some of the best available in the door industry with an innovative self-levelling feature.  These self-adjust in situations such as a slightly unevenly built new opening. As well as this, all the sliding gear is hidden from view for a neater look especially on the more visible door track. 

The handles use come in marine grade 316L stainless steel with equally advanced fixings. These materials are built to withstand even coastal environments. 

The overall appearance of this slimline patio door offers reduced sightlines, maximising the the glass which comes toughened as standard for safety and security. 

Origin OS-77 sliding door track

Product Details

A latest-generation sliding door, perfect for an exterior sliding door, for balconies in apartments, new front porches or to separate a conservatory from the main house.  Available at bespoke sizes and configurations to enhance your home or renovation project. 

  • 20-year guarantee on the running gear, gaskets, frames, locks, levers and seals.
  • Suitable for large doors up to 6.6m wide and smaller areas down to 1.8m wide. 
  • One of the thinnest door mullions at just 44mm thick, maximising the glass area. 
  • Available with double or triple tracks and in two or three panel designs.
  • Designer door handles for effortless use by the whole family.
  • Choose from two or three panels with a choice of fixed or all panels sliding. 



With standard colours of white, black and a choice of grey’s our doors guarantee to work with any traditional or modern home.  Also available are 150 other colours to add a bold or subtle colour to your new patio doors. 

Your Origin OS-44 sliding door glass options also offer options for security, safety, privacy, shade or comfort.  Choose to upgrade your glass to laminated glass for even greater protection. Or why not choose acoustic glass for houses near busy main roads or town centres? Then there is a choice of solar control or reflective glass as well as the latest integral glass blinds for privacy and interior comfort.  There is even the choice of triple glazing for the best in insulation.

bungalow with Origin OS-44 sliding door at the back

Security & Performance

Our doors meet current Building Regulations for thermal performance, with U-Values as low as 1.8 W.K for double glazed doors or 1.2 Wm2K for our triple glazed product. Therefore these doors come engineered and designed for the best in security, safety and energy efficiency.

Every door comes fully sealed with EPDM gaskets and brush pile sealing the door shut and protecting your home from the winter weather, with excellent air, wind and water penetration properties. 

Multi-point locks as standard providing excellent security and doors come tested to the rigorous security standards of PAS 24:2016 too. The door cylinders are secure, resistant to picking, bumping, snapping or drilling. 

Internal security beads secure the glass meaning your doors have an extra layer of security.  

Origin OS-44 sliding door in a family home

Product Features


The ultra-modern OS-44 sliding patio door comes with latest-generation hardware for a smooth slide action as well as valuable safety features for you and your family. Every component is designed for the product and made by standout industry manufacturers.

The sophisticated door rollers ensure a light and smooth slide action as well as keeping the door level as it slides open and shut. The tops of the door are engineered to sit tight within the frame for weather resistance while making open and closing light. The door handles have one of the highest grades of stainless steel designed for extreme coastal environments. And the door locks come from high-grade metals, extensively cycle tested for durability, reliability and safety. Even the door seals at every critical point are engineered for optimum weather performance by helping to keep your door sealed and your home warm and dry.

luxury Origin OS-77 sliding door metal handle


The glass units in your new doors come from the best glass processors and manufacturers. Standard glazing comprises toughened safety glass, having a soft-coat low-emissivity coating, warm edge spacer bars and argon gas fill. 

We offer all manner of glass upgrade options to suit your specific needs and the location of your doors. Integral blinds housed between the glass offer enhanced privacy and shade while also improving the thermal performance of the glass. Laminated glass provides an extra layer of security and there is even glass for acoustics, to prevent fading furniture and fabrics as well as solar control or reflective glass.


Origin sliding doors come with luxurious powder-coated finishes, professionally applied by certified and approved applicators.

We offer a range of standard colours on faster installation times with the full RAL colour range of slightly longer, made-to-order lead times. Popular colours include Grey 7016M, Black 9005M, Lighter Grey 7015M and White 9910G. The colours come in matt finishes with made-to-order gloss or satin shades and come with a full warranty.

You benefit from a luxury and low-maintenance sliding door with only routine cleaning is required. A simple mild soapy solution keeps your new sliding doors looking good for years.

colours available with Dutemänn FD85 Bifolding Doors

Energy Efficiency

Whether you use these doors to replace your old patio doors or for a new extension, they come as an insulated product, exceeding the requirements of current Building Regulations for thermal performance and door energy ratings.

Latest generation polyamide thermal breaks separate the aluminium profiles, creating a thermal bridge. As a result, cold transfer to the inside is minimal. The insulated glass units work with the thermally insulated frames to prevent heat escaping and maximising solar gain. The doors have a U-Value down to 1.2 for triple glazing and 1.8 for double glazing. An ideal product to offer style, security and energy saving in your home.

slimline sliding doors

Some of the images on our website are indicative images illustrating how products may look. Please contact us for full product details and specifications.

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