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Integral blinds are built in to the glazing cavity of bi-fold doors.

In fact they can be fitted within any door or window that has a sealed unit with a cavity of 20mm or more.


  • Built in venetian blind bi fold door open blind up
  • Built in venetian blind bi fold door closed blind up
  • Built in venetian blind operation controller
  • Built in venetian blind bi fold door closed blind down
  • Built in venetian blind bi fold door opening blind down
  • Built in venetian blind bi fold door open blind down

Visofold 1000 Bi-Fold Doors with built in integral venetian blinds

Key Features

  • Control temperature
  • Eliminate glare
  • Add privacy
  • Dust free - No cleaning - Ever!
  • Easy manual or automatic operation
  • Wide range of colours



Rated 5.0 out of 5 Stephen Jackson

Thank-you Marlin Windows for a great job! You designed and built all the windows in our renovation project including sliding doors and bi-folds with care and consideration. The service was exceptional, no request was too much trouble. The installation team were great, very friendly and thorough. I have no hesitation in recommending Marlin, we are very pleased with the results.


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Choose integral pleated or venetian blinds.


Yes To Style

Marry the built in, always new look pleated or venetian blinds, with the Marlin range of slim frame stylish aluminium windows, french doors, bi-fold doors or sliding patio doors.


Colour chart for pleated built in integral blinds for bi-fold, sliding, french doors and aluminium windows


Colour chart for venetian built in integral blinds for bi-fold, sliding, french doors and aluminium windows

No To Cleaning

Fitted within the dust free glazing cavity no cleaning is required. Ever!




Rated 5.0 out of 5 Matthew Corcoron

We have recently had a large 3 pane sliding door and side glazing unit supplied and fitted by Marlin Windows. Having spoken to numerous companies the quote was competitive and we were really impressed with the products on offer and the advice provided. The fitters that attended were very efficient, friendly and most importantly did a great job. My wife and I are delighted with the end result. The service provided throughout was first class, they went above and beyond to help us. I would have no hesitation in recommending Adrian and his team and would certainly use them again.


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Choose manual or electronic operation.

All our systems feature the world’s number one integral blind system ScreenLine®.


c system magnetic controller for integral blinds


C system – magnetic control


The C system, designed with the rotational, frontal, magnetic control for raising and tilting a blind integrated within a double-glazed unit, utilises the force produced by two coupled, rotational, magnetic devices.

One set of magnets is inserted in the blind head rail within the cavity and the other applied to the external glass surface.

This magnet principle does not compromise the unit seal and guarantees the perfect integrity of the double-glazing unit.

SV system – Cordless slider


The ScreenLine® SL20SV system is a manually operated sliding Venetian blind which features a single, cleverly designed magnetic slider to control the whole operation.

Positioned on a narrow slide guide on the edge of the sealed unit, this allows the blind to be raised, lowered and tilted with ease completely cord free.


sv system cordless slider manual controller for integral blinds



S system slider magnetic controller for integral blinds


S system – Slider


The ScreenLine® SL20S is a manual system comprising a 14mm pleated blind integrated within a double-glazed unit with 20mm cavity.

The blind movement is achieved by a magnetic device positioned centrally on the outer surface of the internal pane sliding across the glass surface.

This external magnet interfaces with a similar internal magnet located in the movable rail and it is so designed to absorb possible glass deflections.

W swipe system – Solar powered


The W-Swipe system with ScreenLine® inside is a battery operated, motorised blind system.

With this system, a Venetian or pleated blind encapsulated within a double-glazed unit can be raised or lowered via a control device attached to the window or by remote control.

The system operates with standard, long-life rechargeable batteries and is equipped with a cleverly designed battery charger, which makes the system particularly suitable for residential and commercial environments.


w swipe solar powered motorised controller for integral blinds


Technical advisors are on hand at the aluminium window and door showroom in Keighley in West Yorkshire

Unrivalled Quality Customer Service

Our high quality window and door products are backed by the same high quality customer service. Technical advisors are just a phone call away to answer all your questions no matter how technical.

Typical help provided includes:

  • Choosing the right product
  • Getting the right made to measure size
  • Help with ordering
  • Threshold advice

We provide a FREE sample service to assist with surveying decisions, design considerations, or planning applications – just pick up the phone and ask.



Rated 5.0 out of 5 Nicholas Kitchen

I ordered three sets of doors to self-install: the team at Marlin were really helpful with all my technical queries, which helped make sure my orders were mm perfect and the doors all went in smoothly with the glazing bars all lining up precisely. They look great - will do it all again in our next house!


Rated 5.0 out of 5 Dom B

From our initial contact with Marlin Windows we have been very impressed. Super customer service, they actually answer the phone and call back promptly if they’re not available. Hannah dealt with the quote patiently and efficiently and Adrian was very helpful throughout with technical advice.
The final products, we chose Heritage doors and windows, look stunning. Thank you.


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Manufactured For You

Typically have your doors with integral blinds delivered within 5 weeks

Get A Quote Today

Marlin Windows are the UK supplier of Bi-fold Doors with integral blinds.

Integral built in blinds are available on windows, sliding doors, french doors and bi-fold doors


Modern contemporary aluminium window glazing installed in large 'grand design' style new build property near Ilkley in West Yorkshire

High performance aluminium windows with innovative designs and bespoke glazing options for both contemporary or period applications.


Bi-fold Patio Doors

Our versatile range of high performance aluminium bi-fold doors offer impressive opening apertures.

Sliding Patio Doors

Sliding Patio Doors at Ilkley West Yorkshire

Sliding patio doors with our ultra slim meeting style provide the most pleasing unobstructed views.


Why Choose Marlin Windows?

We care...

about the quality of finish
about you, your project and your property
about your 100% satisfaction

And we are rated ★★★★★ on Google

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"our builder said they were the best supplier and fitter they had ever used"
Mrs Nellist Haworth, Yorkshire


Call 01535 603909