French Windows: Sizes

This is for the size in Millimetres (mm) that you would like the window manufactured to. This size is to include any Cill and will be manufactured to tolerances of 2-3mm. Please ensure the sizes provided are not tight brickwork opening sizes as your new window may not fit, always allow a tolerance of about minus 10mm in the width and minus 10mm in the height. (Reduce size further if your opening is not square, out of level or has protruding bricks as your new window must be installed square, level and plumb).

Assumptions: The window will be split vertically in to two equal sections. Georgian bar, diamond and rectangular lead will be laid out according to our best practice.