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Bi-Fold Windows For Easy Entertaining

Bi-Fold Windows – sometimes called concertina windows – are a versatile option, giving your home a feeling of space and openness. Jason aluminium bi-fold windows are popular additions to kitchens that are connected to the outdoor entertainment area.

The Jason Bi-Fold Window range provides extra strength, thanks to the heavier aluminium frame from our commercial range. Available with:

  • Sill or sill-less finish
  • Three and five-panel options


Custom Made

Every Jason Bi-Fold Window is made to order, so you can be assured of getting the best fit. Speak to a product specialist today and get the perfect bi-fold windows for your home!

View Jason Bi-Fold Windows on display at Home Base showroom in Subiaco. Choose the size, configuration, colours of your windows.

Stylish and Secure

Get the perfect combination of style and security with Jason Bi-Fold Windows. Fitted with deadlocks, these windows will not only look great, but they’ll also help keep you safe.

Jason Bi-Fold Windows feature satin chrome handles and powder-coated hinges.

Bi-fold windows stacked in the corner with the handle clearly visible.

Sill-less Option

The sill-less option provides a seamless transition from inside to out, enabling the benchtop to be installed in one piece. The flush bolts lock into stainless steel ferrules fitted in the benchtop.

The sill-less option is not weatherproof and therefore not warrantied for water ingress. Jason Windows recommends the sill-less option be installed under the main roof in a covered location, such as an alfresco area.

With no sill in sight, the kitchen bench flows seamlessly from inside to the outdoor alfresco area.


Preview a colour

Charcoal Lustre

The deep smokey charcoal hue provides warmth to the light shimmer of the lustre. Charcoal Lustre is a perfect accent to light colour palettes.

Colour Range


Glazing Options

The role glass plays in the ongoing performance and comfort of a home is often overlooked when building or renovating. Glass has a significant impact on the comfort levels, natural light and security of your home. Your home’s orientation and your family’s needs should be considered when selecting the right glass solution for you.

Toughened glass (Safety Glass) is supplied as standard. Other upgrade options include:



While we do not manufacture screens for Jason Bi-Fold Windows, there are multiple options available in the aftermarket.

Popular alternatives that can be fitted with screens include:

BAL Ratings

Screens are required for a window to receive a BAL Rating and while we do not manufacture screens for Jason Bi-Fold Windows, there are multiple options available in the aftermarket.

Popular alternatives that can be fitted with screens include:

Remove & Replace

Are you renovating? Want to update your old, tired-looking windows and doors?

Jason Windows offers a Remove & Replace service, in partnership with local experts.

Replacing windows and doors in existing homes is a specialised trade, and not where our expertise lies. Jason Windows can provide the quality windows and doors for your renovation, and will work alongside our Remove & Replace partners to meet your project requirements and ensure the renovation is done properly and professionally.

Whether you are looking to refresh your home with modern new window and door designs, replace your warped timber front door or upgrade the glass in your home, our Remove & Replace service offers the perfect renovation solution and a stress-free experience from start to finish.

You will love your new Jason Windows and Doors, installed with care by the experts.

Learn more about our Remove & Replace Service or request a quote today!

Product Specifications

Frame Sizes (mm) 100 x 44
Window Height (mm) Min: 857, Max: 1543
Window Width (mm) Min: 1800, Max: 4090
Maximum Panel Width (mm) 800
Maximum Panel Weight 20kgs
Maximum Glass Thickness - Single Glazing (mm) 7


Bifold Windows

3 Panel (left)


3 Panel (right)


5 Panel (left)


5 Panel (right)