Your shutters are supplied with a surrounding frame usually on 3 or 4 sides. If you have a deep enough recess you can choose an inside mount for your shutters. An L frame mounted inside the reveal with be fixed beside the window while a Z frame will be fixed at the front of the recess to give a trim effect.
- Using a steel measuring tape, measure the width in three places; top, middle and bottom and record the smallest width down to the nearest 1/16″.
- Always measure at the points where the frame is going to be fitted. For example if you decide to use a Z frame, measure out at the front of the reveal, not back next the window. We recommend you deduct 1/4″ from the opening width and enter this measurement in the shutter designer.
- Measure in three places; left, center and right and record the smallest height. We recommend you deduct 1/8″ from opening height and enter this measurement in the shutter designer.
If mounting inside the reveal using an L frame, look out for protruding handles on PVC windows which might obstruct the tilting louvers, or alarm boxes etc which may obstruct the fitting of the frame. Also if you have tilt and turn windows you will not be able to use the inside mount option as the window will be obstructed by the frame. In this instance you must use the outside mount frame for fitting onto the face of your wall.