The Measurement Process
Space to the Left (A)
Measure the area from the left edge of the window frame to the nearest obstruction or corner. This space is crucial to determine the fitting of the shutter’s side channels.
Space to the Right (B)
Similarly, measure the space on the right, from the edge of the window frame to any obstruction or wall end.
Space Above Lintel (C)
Measure the space from the top of the window frame to the lowest part of any obstruction above, such as eaves or gutters.
Opening Width (D)
Take the measurement across the window width, from the inside of the left frame to the inside of the right frame. This will be the width of your shutter.
Opening Height (E)
Measure the window’s height from the sill to the underside of the lintel or the top frame edge.
