Why wind matters
Large shutters act like sails in strong wind. A standard shutter can bend or jump out of its guides if the design is not built for the expected load.
What changes in a wind-resistant design
Stronger slats, deeper guides and extra restraints help the curtain stay in place. The details vary by maker, so ask how the shutter is designed and tested rather than relying on a label.
What to ask for
Give the opening size and the exposure of your site. Ask for the wind load the shutter is built for and for the datasheet or certificate that supports it.
