Measure the opening before choosing the blind
The fitting position comes first. A colour sample cannot tell you whether the brackets and fabric will fit your window.
Provider information: Tuiss Blinds Online ↗
Inside the recess or outside it?
Stand back from the window and decide what you want the blind to cover. A recess fit sits within the opening; a face fit covers an area outside it. Handles, trim and the direction in which the window opens can affect that decision. Write down the chosen position before taking measurements so that the numbers retain their meaning.
Why take more than one measurement?
An opening can be slightly uneven. Tuiss Blinds Online’s roller-blind guide describes measuring the width and drop at several points for a recess fit and using the smallest measurement. Follow the current instructions for the exact blind you select: a rule for one fitting system should not be carried across to another without checking.
What is the provider offering?
Tuiss Blinds Online presents made-to-measure roller blinds and explains recess and exact fitting. The supplier also points out that the fabric can be narrower than the overall bracket width. That distinction matters if your aim is to cover a particular area of glass. Read the dimensional guidance as part of choosing the product, not as a final administrative step.
How do the room and material fit together?
Think about light, privacy and the room’s conditions, then compare the stated fabric properties. A sample can help you see a colour beside the wall and in changing light. It does not show the operation of the mechanism or settle the fitting depth. Treat appearance, material suitability and installation as related but separate decisions.
What should be written down?
Record the room, fitting position, measurement units and the exact dimensions requested by the supplier. Measure each window separately even when two openings look alike. Check the ordering form’s terminology against the guide, and seek clarification before submitting a custom size. Read any chain-safety and installation directions for the actual system.
When is it ready to order?
You should be able to explain what each number measures and where the blind will sit. Review the fabric, mechanism, mounting surface and full order terms. Custom products deserve a careful final check: do not assume that a mistaken measurement can be corrected without cost. Use the provider’s current product instructions to finish the decision.
Questions before you decide
Does fabric width equal bracket width?
Not necessarily. Tuiss explains that roller-blind fabric can be narrower than the overall bracket width.
Should I measure every window?
Yes. Record each opening separately and follow the instructions for the chosen fitting system.
Can I use any measuring guide?
Use the guide for the exact product and fitting position, and confirm unclear terms before ordering.