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How To Measure Your Window for a Security Roller Shutter

Height Measurements:

Height Measurement Guide Height Measurement Guide

Ensure you measure both sides of the window and use the largest of the two sides as your final measurement.

On Wall installation (OW)

OW is optional in its placement: to the eaves or above the window, or level with the window, or partly in the window space, etc, to your preference.

Please note: The overall height of the Roller Shutter is to the top of the head box, so if the head box is above the window or door use the table below to calculate the overall height of the Roller Shutter.

The head box increases in sizes from 150mm 165mm 180mm and 205mm in relationship with the height; see the table below.

Please note: On wall (OW) has greater flexibility and is more accepting of 'out of square' windows.

Please note: When the Roller Shutter is fully open, the bottom bar of the curtain will still protrude out from the bottom of the head box by about 20mm.

In-Reveal installation (IR)

IR is determined by the sill and above-window opening (lintel), as illustrated above.

Please note: In-reveal (IR) allows for zero margin for error in measurements.

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Width Measurements:

Width Measurement Guide Width Measurement Guide

Ensure you measure both sides of the window and use the smallest of the two sides as your final measurement.

On Wall installation (OW)

For OW, the overall width of the roller shutter is the window opening plus the width of the guides.
Roller Shutter Guides: 53mm wide each, and there are two (x 2),
So, total width of shutter = width of window plus 106mm.

Please note: On wall (OW) has greater flexibility and is more accepting of 'out of square' windows.

In-Reveal installation (IR)

IR width is determined by the window aperture at its smallest point (e.g. the top of the window may measure 1200mm but the bottom may measure 1203mm and the middle measures 1205mm - your measurement should then be 1200 for overall width).
If the head box is to be fitted at the narrowest point ( as described above ) reduce the width by 1mm to 1199mm so you know that the head box will fit between the opening.
If the narrowest point is at the bottom stick to that measurement.

Please note: In-reveal (IR) allows for zero margin for error in measurements.

Please note: That some outward opening windows and doors many not open with In-reveal (IR) installation. The guide is 53mm wide and may interfere with outward opening windows and doors; in this case On Wall installation may be your only option.

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Head box Sizes

In case you are wondering andquot;But how far will that 'Box' thing stick out?andquot;, the table below shows the relationship between a Roller Shutters' size and how big the Head Box will be.
The height of the head box for the BC45 is the same as the width of the box (i.e. 150mm box is 150mm high x 150mm wide).

BC45 Headbox


Roller Shutter Height Includes Head box Head box Sizes
Up to 1150mm 150mm
Up to 1600mm 165mm
Up to 2000mm 180mm
Up to 2800mm 205mm
Up to 3000mm 250mm


Please note: The battery motor is too large to fit in the 150mm head box, and is only suitable for the 165mm, 180mm and the 205mm head box.


No Sill

Please note: Although 90% of windows have sills, if your windows don't, then don't despair! We have a solution for that.
We can supply a false sill which all roller shutters needs for the curtain to fully close down on.
The sill is aluminium and would be the same colour as the head box and guides and can come in 3 sizes:


24mm x 22mm $6.00 Lm.
24mm x 46mm $8.50 Lm.
24mm x 77mm $11.00 Lm.


To order a sill send an email and request a sill immediately after you place your order 
I will then send you a Pay Pal request for payment.


Protruding door and window handle's

If your door or window handle is protruding out past the exterior wall, it will interfere with the operation of the shutter. This can be easily overcome, we can supply an andquot;aluminium angleandquot; that would be the same colour as the head box and guides, and they come in 3 sizes - 24mm x 22mm, or 24mm x 46mm, or 24mm x 77mm.

This angle with it's 24mm side is fixed to the wall, allowing it then to protrude out from the wall 22mm or 46mm or 77mm. The guides that support the Roller Shutter are 53mm wide x 22mm thick, so allowing for the thickness of the guide 22mm, the 22mm x 24mm angle would give a flush fit, the 46mm angle would give you a space of 24mm, and the 77mm angle would give you a space of 55mm. If you have a sill you will need 3 angles (one each side and one for the top), if there is no sill you will need 4 angles. Fit these angles to the wall with the angles facing inward so they are hidden behind the roller shutter, then fasten the roller shutter to the angles.