How To Measure
Measure the frame outside in three places on both the height and width, (see right).
Always measure the exact brickwork opening not the old window frame.To get an accurate size it will be necessary to remove some of the rendering surrounding the frame.
Always take the smallest of the three measurements, then deduct 10mm from this size and enter this on the order form, do this for both width and height. The 10mm allows for sealing and clearance tolerances.
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