Measure the structure as well as the opening
Record cassette support, side-guide fixing zones, clearances and the material behind the visible finish.
Outdoor Living & Architecture · Large-opening answer
How Do You Plan a Very Large Outdoor Blind Opening?
Very large openings are not simply small blinds scaled up. Product class, structure, handling and servicing become more important as the opening grows.
Planning guidance — final supplied configuration remains project-specific.
Consider dividing the opening
Multiple independently operated blinds can improve handling, servicing and day-to-day flexibility even where a wider single system may be technically possible.
Plan delivery and installation
Long cassettes and large assemblies need practical transport, lifting and installation access.
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