Leaf count
Fewer broad leaves or more narrow leaves are compared for proportion and use.
Premium Aluminium
49mm Sash Bi-Fold Doors
A refined aluminium bi-fold with a 49mm sash, 110mm meeting sightline and smooth hardware for openings from two to fourteen leaves.
Made to measureSurveyed by PM WindowsInstalled by our team
49mmSash profile
110mmMeeting sightline
2–14Sashes*
PAS 24Security test
Open the room completely
A generous opening with a finer frame rhythm.
The 49mm sash system balances contemporary proportions with large opening possibilities. PM Windows will compare two-panel through multi-leaf layouts, traffic-door access, thresholds and stacking before confirming the final arrangement.
01
A generous clear opening
Panels fold to one or both sides to connect the room with the garden.
02
Flexible day-to-day access
A traffic door can provide convenient access without folding the complete set.
03
Made around the aperture
Leaf sizes, opening direction, threshold and glazing are selected as one layout.
Simple design explorer
See the main starting points.
Choose a starting arrangement below. PM Windows will confirm the exact configuration, proportions and practical details after survey.
This visual is a guide, not a technical drawing. Every final arrangement is subject to system limits, survey and detailed design.
Price this option →Three-leaf arrangement
A popular route for compact and medium openings.Illustrative layout
A popular route for compact and medium openings.Illustrative layout
Tailored to the project
The decisions we make with you.
The best result comes from resolving the technical and visual details together, then recording them clearly in the quotation.
Stack direction
Fold left, right or split the stack to suit the room and patio.
Traffic door
Create simple everyday access without moving the complete set.
Threshold
Weathered and lower options are selected for exposure and access needs.
Glazing
The glass specification balances comfort, safety, security and light.
Hardware
Handles, hinges and running gear can coordinate or provide a considered contrast.
Colours & finishes
Quietly coordinated or deliberately contrasting.
Availability varies by product. Explore useful RAL starting points, compare finish types and save a shortlist before PM Windows confirms the exact options for your chosen system.
Check finishes →Anthracite Grey
Jet Black
Traffic White
Warm Grey
Bronze Tone
Special Finish
Product specification
The important facts, made easy to compare.
These headline capabilities are a starting point. The exact product, sizes, performance, glass, security, finish and guarantee will be stated in your written quotation.
Selected, specified, surveyed and installed by PM Windows using a proven specialist system.
- Sash profile
- 49mm
- Meeting sightline
- 110mm
- Configurations
- Two to fourteen sashes*
- Corner option
- 90° without fixed mullion*
- Maximum sash weight
- 120kg*
- Glazing
- 25–48mm
- Threshold
- Standard or low options
- Security
- PAS 24 tested
*Maximum sizes, performance and guarantee terms depend on the selected system, dimensions, configuration, glass, location and installation. Final project values are confirmed in writing.
Product inspiration
Picture the product in context.
These approved product images show the finer sash, folding action and broad configuration range. Completed PM Windows work remains clearly labelled in the installations gallery.
Frequently asked questions
Useful answers before you choose.
How many panels should a bi-fold have?
That depends on the aperture, preferred leaf proportions and where you want the panels to stack. PM Windows will draw the practical options.
Can I have an everyday access door?
Many configurations allow a traffic door that operates independently from the folding set.
Can bi-folds open inwards?
Several systems offer inward or outward opening. The best choice depends on internal space, external space and drainage.
Ready to take the next step?
Bring us your plans, dimensions or simply an idea.
We will shape the arrangement, explain the options and provide a clear written quotation for supply and installation.