You measure yourself
Most of our customers
- Measure to the 1/8 in.to the millimetre.
- Round down.
- Inside the frame, we take off 1/4 in.6 mm for you.

Measuring guide
A quick quote or an order? A tape, a phone or a laser? Choose: the page gives you your instructions.
Texts every day, 7 a.m. to 10 p.m. · Would you rather we measure for you? Book the consultation
Tap one of the 6 options: your instructions appear right away.
Your measurements
Your tool
01
To the nearest inchTo the nearest centimetre is perfect for a quote: more precision wouldn't change the price. The firm price comes after the measurements are verified: at the in-home consultation, or with your true measurements if you order yourself.
Of each window, to the nearest inchto the nearest centimetre, always the width first, then the height.
The whole window, straight on.
By text, email or form.
A phone is enough for a quick quote: see iPhone or Android.
02
Your measurements are used to make your blinds: they must be exact and verifiable. The firm price comes with these true measurements, and you can then pick up your blinds at our place. If you provide your own measurements, a measuring error is your responsibility; if our team measures, it's ours.
Measure with a steel tape or a laser: a phone isn't accurate enough to order.
And when you round, always round down.
Give us the exact opening size: we take off 1/4 in.6 mm so the blind moves without rubbing.
Two windows that look alike almost never have the same measurements.
Always write the width first, then the height, and state the unit.
The mount changes how you measure. Not sure? Measure both ways: we'll advise you.
The blind sits inside the window opening. The frame stays visible. Most of our blinds need about 3 in.76 mm of depth.
From one inside edge of the frame to the other: top, middle and bottom. Keep the smallest.
From the top of the opening down to the sill: left, centre and right. Keep the smallest.
From the edge of the frame to the glass, or to whatever sticks out: crank, handle, latches.
The whole window, straight on, with anything in the way.
Are your three widths quite different? The frame isn't square, which is common. Write down all three: we'll tell you if an outside mount is better.
Crank, handle, latches or remote? We still mount inside the frame, half and half: about 1 1/2 in.38 mm of the cassette stays inside the frame (sometimes 1 5/8 in.41 mm), the rest sticks out. The fabric still rolls down inside the frame.
The blind is fastened on the trim or above it, and covers the whole window. Ideal when the frame is shallow or out of square.
On the trim or higher on the wall: you need a flat surface for the brackets.
The trim, from one outside edge to the other, as is. We usually add 1 3/8 in.35 mm so the fabric covers the whole trim.
From the planned top of the blind down to where you want it to end: the sill, below the apron, or lower.
Baseboard heater, furniture, handle, curtain rod: note them and take a photo.
Why 1 3/8 in.35 mm more? The head of the blind is a little wider than the fabric: it extends about 11/16 in.17 mm past the trim on each side. Keep a little flat wall on each side.
To the 1/8 or the 1/16 in.?How much do we take off? It depends on who measures. Either way, we always round down.
Most of our customers
Designer, contractor, installer
03
Steel tape measure
Avoid a sewing tape: it stretches.
Between two numbers there is one inch. The longer the line, the bigger the fraction.
The numbers are centimetres. Each small line is one millimetre.
04
Measure app
To order, a phone isn't accurate enough: use a tape or a laser.
05
AR measuring app
To order, a phone isn't accurate enough: use a tape or a laser.
06
Laser distance measure
The depth is too short for a laser: take it with a tape.
Your sheet
Print the sheet, fill it in window by window, then send us a photo by text or email.
The sheet is made to be printed: it's too wide for a phone. Print it with the button above, or text us your measurements (width × height, one line per window) at (514) 967-3629.
| Window (room) | Mount (inside / wall) | Width: top · middle · bottom | Height: left · centre · right | Depth | Notes (motor, obstacles) |
|---|---|---|---|---|---|
| 1 | |||||
| 2 | |||||
| 3 | |||||
| 4 | |||||
| 5 | |||||
| 6 |
Text or call: (514) 967-3629 · Email: pm@legarsdesstores.com · legarsdesstores.com
Special cases
They are measured and installed by our team. Send a photo for a first idea of the price.
Roller shutters →Send a photo of the opening from the outside: we'll tell you exactly what to measure.
Zip Track exterior shades →Cathedral ceiling, stairwell: we measure them on site, from our own scaffolding.
High installation →Arch, triangle, trapezoid: send a photo with the width and the height at the highest point. The exact shape is taken with a template.
Specialty shapes →Battery-powered: nothing more to measure. Wired: also take a photo of the wall around the window, and we'll tell you how to power it.
Somfy motorization →Measure the whole trim, from one edge to the other, and tell us which side the door opens on.
Your measurements are ready
There's no single right way: pick the one that suits you.
Frequently asked questions
No. To the nearest inchTo the nearest centimetre is perfect for a quote: more precision wouldn't change the price. Precision to the 1/8 in.to the millimetre, rounded down, matters when you order: the firm price comes after the measurements are verified.
No. Give us the exact opening size, rounded down: inside the frame, we take off 1/4 in. (1/8 in. if a professional measured to the 1/16 in.)6 mm (3 mm if a professional measured).
We usually add 1 3/8 in.35 mm to the trim width: the fabric covers the whole trim and the head extends about 11/16 in.17 mm on each side. Give us the trim width as is.
Both. Tap “Metric”, next to the rectangles: all the instructions switch to millimetres.
Often, yes. With less than 3 in.76 mm, we mount the blind half and half: about 1 1/2 in.38 mm of the cassette inside the frame, the rest sticking out, and the fabric rolling down inside the frame.
No, it's common. Write down your three widths and three heights: if the difference is large, we'll suggest an outside mount, which hides it.
For a quick quote, yes. To order, measure with a steel tape or a laser.
Text us a photo of your windows for a first idea of the price, call us, or book the free consultation and quote. Our team then takes the measurements at your home.
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