Blinds & Shades can be mounted either inside the window frame, or outside. Either way, you will need both the width and the height.
FOR INSIDE MOUNT:
Blinds are mounted inside the window frame. Measure from inside edge to inside edge.
1. For the inside width:
- Measure inside window frame from left to right.
- Repeat this three times at the top, middle and bottom of the frame. Even new windows can warp, so you’ll want to be as accurate as possible for a seamless fit.
- Record the smallest of the three measurements, to the nearest 1/8th inch, rounding down
2. For the inside height:
- Measure from top to bottom, again in three places – left, middle, and right – to account for any variation or warping.
- Record the shortest of the three measurements, to the nearest 1/8th inch, rounding down.
FOR OUTSIDE MOUNT
Blinds mounted outside/on top of the window frame. Measure moulding edge to moulding edge.
1. For the outside width:
- Measure from left to right, from left outer moulding edge to the right outer moulding edge – or however wide you want your blinds to be. (Perhaps you’d like to give yourself extra coverage on either side of the window)
- Repeat this three times at the top, middle and bottom of the frame. Even new windows can warp, so you’ll want to be as accurate as possible for a seamless fit.
- Record the smallest of the three measurements, to the nearest 1/8th inch, rounding down.
2. For the outside height:
- Measure from top to bottom, from top of upper moulding to the bottom of the lower moulding edge – or however tall you want your blinds to be.
- Take the measurements in three places – top, middle, and bottom – to account for any variation or warping.
- Record the tallest of the three measurements, to the nearest 1/8th inch, rounding up.
