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Visofold 6000 is a high-quality, high-performance slide and fold door.

Featuring slim profiles, the door provides a contemporary, elegant solution for both residential and commercial applications.

Key Features

  • Maximum glass
  • 90% opening
  • Maximum flexibility – minimum space requirement
  • Door panels are moved to the side and then swung open
  • Slim lines and discrete hardware maximise light
  • Easy access low or rebated threshold accessibility options
  • Fully compliant with latest building regulations
Smart visofold 6000 slide and fold doors
Smart visofold 6000 slide and fold doors

Slide & Fold Door

  • Door sashes are moved to the side in a concertina fashion
  • Smooth, easy and reliable operation
  • Slim profiles maximise open space
  • Integrates outdoor and indoor living space



Rated 5.0 out of 5 Malcolm Sykes

The guys did an excellent job today removing my old doors and then installing my new bi-folds... old doors and frame out cleanly and then installed the new doors very neatly. All in all an excellent job well done. The new bi-fold doors look really good!


Read this and our other 5 star reviews left on Google


Product Information


The Visofold 6000 slide and fold door offers extremely slim profiles which are perfectly suited to residential properties where narrow sight lines and maximum glass areas are required

Low threshold custom design option for unimpeded easy access tailored to your individual specification, which ensure the perfect finish at floor level or rebated thresholds that improve weather resistance.

Visofold 6000’s flexibility also makes it suitable for commercial projects.

Where large opening apertures are required, the system offers maximum light and space to give unimpeded views.

This highly-versatile, easy-to-operate system is the perfect option for even the largest project. Capable of opening up an entire wall, yet presenting a contemporary, elegant glazed façade when closed.

The system features a choice of internally or externally folding sashes, which when open, sit flush to the frame. Sashes are hung from a floating mullion and slide on a recessed bottom roller and top guide. This allows for ultra-slim profiles, smooth operation and robust security.

With high-security glazing, robust locking mechanisms (including multi-point locks on the main opening sashes, and shoot-bolts on the floating mullions), an unrivalled colour range and the option of colour-matched accessories, the system can be tailored to meet each project’s specific requirements.

Delivering the perfect combination of strength and performance, Visofold 6000 profiles feature a polyamide thermal break that enhances the system’s thermal performance. High quality PDM gaskets and weather brushes aid weather resistance.

Fully compliant with the requirements of Building Regulations Document L 2010, the doors have the option of either low thresholds for unimpeded, easy access, or rebated thresholds that offer improved weather resistance.



Visofold 6000 bifold doors lock

Premium Security Fitted As Standard With Patented Active Cam Technology

The clever locking system of the Avocet ABS® diamond grade cylinder knows when it has been snap attacked and fires into action to create a robust barrier to entry. The patented Active Cam TechnologyTM is hidden deep within a solid Molybdenum cam which is 20% stronger than steel, and delivers ultimate resistance against a lock snapping attack and snap/twist manipulation. All of the snap technology is focused on the outside part of the lock only. This makes sure that maximum strength is given to the inner part of the lock - the part that has the job of securing your door.

Visofold 6000 bifold doors secure by design
Glazing and frame colour choice


Our aluminium profiles are polyester powder coated by our systems suppliers using the very latest paint application techniques guaranteed for 25 years.

Fully compliant to the latest June 2022 building regulations our standard double glazing is the exceptional light transmitting, energy saving ClimaGuard® A+ low emissivity (Low-E) glass manufactured by Guardian Glass.

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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. From our first contact with Adrian through to the final fitting, the service was exceptional...


Read the rest of this and other Reviews of Marlin Windows left on Google


Featured Bi Fold Door Projects:


Rated 5.0 out of 5 Malcolm Sykes

Many thanks for supplying and installing my new bi-fold doors. The guys did an excellent job today removing my old doors and then installing my new bi-fold doors. They managed to get the old doors and frame out cleanly and then installed the new doors very neatly.
All in all an excellent job well done. The new bi-fold doors look really good!


Read this and our other 5 star reviews left on Google




Our low profile superslim frame low threshold bi-fold doors featured on Love Your Home & Garden With Alan Titchmarsh (Swindon episode)
broadcast on ITV on January 15th 2019

Watch the programme highlights in less than 2 minutes below


"it's like a dream home" says homeowner Nina

"So easy to open" says Alan

"so slim and so elegant, barely any step we're talking millimetres" says architect Ewald Van Der Straeten

Document Downloads

File Type Document Description Download Document
Adobe PDF Smart
Sliding and Slide & Fold Brochure
Download (13.2 MB)

Technical Specification

Technical Performance

U Value 1.5W/m2K using a 1.0 centre pane
Air Class 2, 450Pa
Water Class 8A, 450Pa;
Wind Class 3, 1200Pa

Design Specification

Frame Width 88mm
Frame Depth 76 or 82mm
Glass 24, 28, 32 or 40mm double or triple glazed units
Typical Sight Line 94mm for Slide and Fold Door
Max Sash Height 2200mm
Max Sash Width 1000mm
Max Sash Weight 100KG

The Buyers Guide To Bi-Fold Doors

guide to how to buy bi-fold doors

Read our guide to buying bi-folding doors for your home

Integral Blinds For Bi-Fold Doors

built in integral blinds for bi-fold doors

All bi-fold doors can be fitted with built in integral blinds

How To Guide To Low & Flush Thresholds

guide to how to get low & flush easy wheelchair access thresholds

Read our guide to achieving a fabulous seemless appearance of a flush threshold


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