Use a metal tape, measure in millimetres and follow the instructions for the exact blind system you are ordering.
Use a rigid metal tape and record width before drop. Check handles, tiles, vents and other obstructions. Do not assume similar-looking windows are the same size.
Record all sizes in millimetres.
Measure every position shown in the relevant guide.
Use the smallest measurement when instructed.
Keep photographs for specialist or Perfect Fit systems.
Width
Measure across the top, middle and bottom of the recess. Use the smallest of the three measurements.
Drop Measure down the left, centre and right of the recess. Use the smallest of the three measurements.
Obstructions Check for tiles, handles, vents or anything else that narrows the recess or obstructs the blind.
Configurator Select the recess measurement type. Do not make an extra deduction unless the product guide explicitly requires it.
Start with the recess Measure the recess width and drop as a reference.
Add coverage Add at least 50 mm on each side to the width and drop, where space allows, to reduce light gaps and improve coverage.
Check movement Confirm the finished blind can move freely and will not clash with handles, furniture, radiators or doors.
Enter exact size Select the exact or face-fit option in the configurator and enter the required finished coverage.
Glass width including beading (B) Measure the visible glass width including the glazing bead, following the diagram.
Glass height including beading (A) Measure the full glass height including the glazing bead.
Photograph the doors or windows Take a clear photograph of the whole area from about two metres away so frame layout and handles can be checked.
Send the details Add the measurements and any notes to the order. The team will review compatibility before production.
Perfect Fit systems depend on bead shape, bead depth, seals and handle clearance. Contact us before ordering if any detail is unclear.
Glass width (A) Measure the glass width in three places and use the smallest measurement.
Glass height (B) Measure the glass height in three places and use the smallest measurement.
Bead depth (C) Measure the glazing-bead depth accurately and identify the bead profile.
Send photographs Provide a photograph of the whole glazed area and a clear image of the bead profile. Compatibility is confirmed before production.
Every window has its own labelled measurements.
Width and drop have not been reversed.
The selected unit is millimetres.
Recess or exact fit has been chosen correctly.
Handles, tiles, vents and opening movement have been checked.
Specialist systems include the required photographs.
Our team can help identify the correct system and check compatibility.