Window Blind Measuring Guides
Please use your exact measurements
The more precise you are, the more precise we are. We cannot accept responsibility for measurement errors when ordering.
We have text and/or video guides for different types of measurements (recess, actual or fabric width). Please use a steel tape measure or a laser/digital measuring device (electronic tape measure) when measuring as the cloth tape measures can stretch or bend and give false readings.
Please note for recess sizes we would make deductions to blind sizes given to ensure the blind fits within the recess, this will be explained in more detail below.

Wood Blinds
How To Measure Outside Recess
How To Measure Inside Recess
How To Fit Wood Venetian Blinds
Tips
- Measure in 3 places for both the width and the drop, and always use the smallest measurements
- Don't make any deductions from your measured sizes
- Read and follow our guides for fitting within or outside the window recess.
Vertical Blinds
How To Measure Outside Recess
How To Measure Inside Recess
How To Fit
Tips
- Measure in 3 places for both the width and the drop, and always use the smallest measurements
- Remember the drop provided will be a combination of the headrail and slats
- Remember, to consider the bunching option of the blind when fitting by opening windows or doors.
Replacement Slats
How To Measure Replacement Slats
Tips
- Measure the complete length of your vertical blind slat, as it lays on a table
- Don't include any part of the hanger that sticks out of the fabric or undo any stitching of your current slat
- Check and compare your hanger to our Double Slotted Blind Hanger
Roller Blinds
How To Measure Outside Recess
How To Measure Inside Recess
How To Fit
Tips
- Measure in 3 places for both the width and the drop, and always use the smallest measurements
- Remember, when choosing recess fitting the material will be roughly 35mm less, for bracket fixings
- Read and follow our guides for measuring roller blinds
Tips
- Measure in 3 places for both the width and the drop, and always use the smallest measurements
- Don't make any deductions from your measured sizes
- Read and follow our guides for fitting within or outside the window recess.
Tips
- Measure in 3 places for both the width and the drop, and always use the smallest measurements
- Remember, to consider the stack height of the Roman when placing by opening windows or doors.
- Read and follow our guides for fitting within or outside the window recess.
Perfect Fit Blinds
Below videos apply to Perfect Fit Wood, Perfect Fit Metal and Pleated Perfect Fit Blinds
How To Measure
How To Fit
Tips
- Measure in 3 places for both the width and the drop, and always use the smallest measurements
- Remember, to check for any obstructions on the frame, such as window handles
- If you are unsure if Perfect Fit are suitable for your window please call us before ordering.
Tips
- Measure in 3 places for both the width and the drop, and always use the smallest measurements
- Check for any obstructions on the frame, such as window handles or vents, ensuring these are 25mm clear of the glass.
- If you are unsure if Perfect Fit are suitable for your window please call us before ordering.
Tips
- Ensure you select the correct brand and the exact matching code when ordering.
- Although some codes have the same blind size, some have slight differences such as
a P04 is different to an 04, and a MK06 is different to a M06
- No plaque visible? Check the GLASS SIZE on our Velux chart, Keylite chart, Fakro chart, RoofLITE chart