How to measure - Circular
How to measure correctly? (Circular / oval model)
A: Measuring on the opening frame?
➜ Add +2 cm all around (hook-and-loop tape of 2 cm around the entire circumference).
B: Measuring on the final fitting frame (outside / inside)?
➜ Add nothing. Measure the desired final dimension directly.
Specific to the circular / oval modelIf your opening is a perfectly round circle, only one measurement is needed:
- Diameter (D) : from one edge to the other, through the centre.

If the shape is oval or slightly irregular, please give:
- Maximum width (W max)
- Maximum height (H max)
➜ From these two dimensions, we calculate the curve automatically.
Important tip: always round up to the next inch.
➜ Better a bit too big than too tight 😉
Fitting tip: clean and dry the surface thoroughly before applying the hook-and-loop tape for the best hold.