Perfect Fit Shutters are not suitable for square-edged window or door frames. They can only be installed on uPVC windows and doors with internal rubber beading.
To check suitability, measure the bead depth—this is the distance from the glass to the outer edge of the window frame. This measurement must fall between 18mm and 30mm.
Bracket sizes are available in even numbers only: 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, and 30mm.
❗ Bead depth is critical.
Ordering the wrong bracket size may cause the shutter to appear too large or too small — when in fact, the issue is with the bracket, not the shutter itself.
For example, if you need a 20mm bracket but choose 22mm instead, there will be an extra 4mm gap between the top and bottom brackets, making the shutter look undersized.
If your bead depth is less than 18mm or more than 30mm, this product is not suitable for your windows or doors.
For guidance, please refer to our measuring guide or videos before placing your order.
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