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Folding 2017-05-26T09:44:24+00:00

Project Description

Window folding

Window Folding

Folding window shutters relates to the number of interior shutters across the window and how you would like to open them. The secret is to match the number of shutters to the number of sections in the window. Most customers keep the actual shutter panels closed and adjust the louvres to let the light in and out, so don’t worry too much about where the panels are going to fold back to.
Top opening:

If you choose the top opening option both the top and bottom shutters will fold the same way and you will have the same amount of shutters in both halves.  For example, if you choose 2 Left, 2 Right (LLRR) you will in fact get 8 panels.


The guide below should help you understand the different folding window shutter options:

  • Single – One shutter on its own (L or R)
  • Bi-fold – Two hinged together to one side (LL or RR)
  • Tri-fold – Three hinged together to one side (LLL or RRR)
  • Quad-fold – Four hinged together to one side. (LLLL or RRRR)
  • Track mounted – Bi-folding hanging on a track
  • T Post – Can be hinged or bi-folded on Tposts (LTLTR or LTRTR)
  • Top opening – Both the top and bottom shutters will fold the same way.


When ordering DIY shutters, the folding in the drop down menu is shortened to L and R, some examples are:

  • 1 shutter folding left is written simply as L
  • 2 shutter opening left and 2 opening right would be LLRR.


Here are some examples of how they fold open.

Bifolding shutters
Deco frame showing an open shutter
2 shutters bifolded to the right


Match the number of panels to the layout of the window. i.e. 3 section window = 3 shutters 2 section window = 2 shutters

For Cafe style or half height shutters, it is even more important to match the number of shutters to the layout of the window.

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Tpost shutter folding

Tpost Folding

T-posts are a great way to match your shutters to the window style and they make it easy to access side windows.  Shutters can be hinged to the Tposts and be opened from either side of them.  
What is a Tpost?

A Tpost is an extra vertical post fitted within the main shutter frame that shutters can be hinged from.  They can be used horizontally or vertically within a shutter frame.

A shutter fitted to a Tpost opens the same way as a normal window shutter. A typical wide window with two side openers and a wide section in the centre would fold as follows:

L-T-LR-T-R (L= Folding Left, T = Tpost, R = Folding Right)


There are standard width limitations between the Tposts, these vary depending on the shutter type.

Tposts that are fitted horizontally can have shutters hinged to them so that they fold downwards.


Here are some examples of windows that use Tposts.

Single shutter open
Typical Tpost design shutter
Inward opening doors and shutters


A Tpost design is perfect on UPVC windows with 3 or more sections with side openers.

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Patio door shutter folding

Track Mounted Folding

Track mounted shutters require an even number of panels on each side to ensure they open properly. Like the folding on windows, it’s key to match the number of shutters to the door layout, although this can be harder to achieve on doors than windows.


Track shutters can bi-fold to the left or right by sliding them. Small wheels attached to the top of the panel run in a metal track fitted to the top of the window recess. This means the panels are all attached to the top track, so when opened they protrude into the room at right angles and cannot be folded flat back against wall.


The maximum single panel width for track mounted shutters are:

  • Top and bottom track – Max width is 660mm.
  • Top track only – Max width is 550mm.
  • Max window width – 12 x shutters @ 660mm = 7920mm.

Watch a video here –  on how track shutters fold.


Here are some examples of track mounted shutters.

Track mounted shutters
Close up bottom track folding
Kitchen doors with track shutters


Track shutters are best used for wide openings such as patio doors.

If you can’t choose between left or right folding, opt for a floating design allowing the tracked shutters to be stacked either side.

Remember you can also use shutters as room dividers.

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Shaped window folding

Shaped Shutter Folding

Shaped shutters will fold the same as rectangular ones, but in some cases the panel can hit the recess depending on the style of the window. Round window shutters can be hinged left or right, but require a straight section of shutter/frame.  For a completely round shutter fit magnets instead of hinges.  This allows the shutter to be removed from the frame for cleaning and means there are no straight sections. .

Shaped panels can be hinged on Tposts, this can be an easy way to ensure the shutters still open.

Using a centre Tpost allows the shutters to be opened into the middle, usually the highest part of the window.

Making templates can be a good way to ensure the shutters will open and miss any obstructions.  Cut some cardboard into the shape of the shutter, you can cut it in half if you require bi-folded shutters.  Use the template in the window to check if the shutter will hit the recess.  Remember to allow for the thickness of the frame.

Try fitting the shutters towards the front of the recess, this might allow the shutters to wrap around the wall.

Triangular shaped panels may need to fold into the centre of the window to allow them to open, depending upon the shape of the room.

Shutters can also be folded downwards when using horizontal T-posts – watch a video here.

Shutter hinged downwards
Curved oak shutters open
Inward open triangular shutters


Most of the time, shutters are left closed and only the louvres adjusted to let the light in and out, so a remote control shaped shutter could be the answer

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